TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Paraskevopoulos, K.M.
AU  - Zorba, T.T.
AU  - Vasiljević, Zorka Z
AU  - Pavlidou, E.
AU  - Vujatović, Stevan S.
AU  - Blagojević, Vladimir
AU  - Aleksić, Obrad
AU  - Bojicic, Aleksandar
AU  - Nikolić, Maria Vesna
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/824
AB  - PbTe single crystals doped with monovalent Au or Cu were grown using the Bridgman method. Far infrared reflectivity spectra were measured at room temperature for all samples and plasma minima were registered. These experimental spectra were numerically analyzed and optical parameters were calculated. All the samples of PbTe doped with Au or Cu were of the "n" type. The properties of these compositions were analyzed and compared with PbTe containing other dopants. The samples of PbTe doped with only 3.3 at% Au were the best among the PbTe + Au samples having the lowest plasma frequency and the highest mobility of free carriers-electrons, while PbTe doped with Cu was the opposite. Samples with the lowest Cu concentration of 0.23 at% Cu had the best properties. Thermal diffusivity and electronic transport properties of the same PbTe doped samples were also investigated using a photoacoustic (PA) method with the transmission detection configuration. The results obtained with the far infrared and photoacoustic characterization of PbTe doped samples were compared and discussed. Both methods confirmed that when PbTe was doped with 3.3 at% Au, thermoelectric and electrical properties of this doped semiconductor were both significantly improved, so Au as a dopant in PbTe could be used as a new high quality thermoelectric material.
PB  - Hindawi Ltd, London
T2  - Advances in Materials Science and Engineering
T1  - Lead Telluride Doped with Au as a Very Promising Material for Thermoelectric Applications
VL  - 2015
DO  - 10.1155/2015/283782
ER  - 

@article{
author = "Nikolić, Pantelija M. and Paraskevopoulos, K.M. and Zorba, T.T. and Vasiljević, Zorka Z and Pavlidou, E. and Vujatović, Stevan S. and Blagojević, Vladimir and Aleksić, Obrad and Bojicic, Aleksandar and Nikolić, Maria Vesna",
year = "2015",
abstract = "PbTe single crystals doped with monovalent Au or Cu were grown using the Bridgman method. Far infrared reflectivity spectra were measured at room temperature for all samples and plasma minima were registered. These experimental spectra were numerically analyzed and optical parameters were calculated. All the samples of PbTe doped with Au or Cu were of the "n" type. The properties of these compositions were analyzed and compared with PbTe containing other dopants. The samples of PbTe doped with only 3.3 at% Au were the best among the PbTe + Au samples having the lowest plasma frequency and the highest mobility of free carriers-electrons, while PbTe doped with Cu was the opposite. Samples with the lowest Cu concentration of 0.23 at% Cu had the best properties. Thermal diffusivity and electronic transport properties of the same PbTe doped samples were also investigated using a photoacoustic (PA) method with the transmission detection configuration. The results obtained with the far infrared and photoacoustic characterization of PbTe doped samples were compared and discussed. Both methods confirmed that when PbTe was doped with 3.3 at% Au, thermoelectric and electrical properties of this doped semiconductor were both significantly improved, so Au as a dopant in PbTe could be used as a new high quality thermoelectric material.",
publisher = "Hindawi Ltd, London",
journal = "Advances in Materials Science and Engineering",
title = "Lead Telluride Doped with Au as a Very Promising Material for Thermoelectric Applications",
volume = "2015",
doi = "10.1155/2015/283782"
}

Nikolić, P. M., Paraskevopoulos, K.M., Zorba, T.T., Vasiljević, Z. Z., Pavlidou, E., Vujatović, S. S., Blagojević, V., Aleksić, O., Bojicic, A.,& Nikolić, M. V.. (2015). Lead Telluride Doped with Au as a Very Promising Material for Thermoelectric Applications. in Advances in Materials Science and Engineering
Hindawi Ltd, London., 2015.
https://doi.org/10.1155/2015/283782

Nikolić PM, Paraskevopoulos K, Zorba T, Vasiljević ZZ, Pavlidou E, Vujatović SS, Blagojević V, Aleksić O, Bojicic A, Nikolić MV. Lead Telluride Doped with Au as a Very Promising Material for Thermoelectric Applications. in Advances in Materials Science and Engineering. 2015;2015.
doi:10.1155/2015/283782 .

Nikolić, Pantelija M., Paraskevopoulos, K.M., Zorba, T.T., Vasiljević, Zorka Z, Pavlidou, E., Vujatović, Stevan S., Blagojević, Vladimir, Aleksić, Obrad, Bojicic, Aleksandar, Nikolić, Maria Vesna, "Lead Telluride Doped with Au as a Very Promising Material for Thermoelectric Applications" in Advances in Materials Science and Engineering, 2015 (2015),
https://doi.org/10.1155/2015/283782 . .

TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Paraskevopoulos, K.M.
AU  - Zorba, T.T.
AU  - Vasiljević, Zorka Z
AU  - Pavlidou, E.
AU  - Vujatović, Stevan S
AU  - Blagojević, V.
AU  - Aleksić, Obrad
AU  - Nikolić, Maria Vesna
PY  - 2013
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/683
AB  - PbTe single crystal samples doped with Mn and Yb were grown using the Bridgman method. Far infrared reflectivity spectra were measured at room temperature for samples with different impurity concentrations (total impurity concentration Mn+Yb varied between 0.59 and 2.52 at%, while the impurity Mn/Yb ratio varied between 0 and 3.48). All samples were of the "p" type. Plasma minimum was registered for all samples and varied between 114 and 198 cm(-1) depending on the total impurity concentration and ratio. Samples with lower plasma minimum had a higher free hole mobility, with the highest value of 7000 cm(2)/Vs determined for a sample with the highest Mn/Yb ratio of 3.48 (1.67 at.% Mn and 0.48 at.% Yb).
PB  - National Institute of Optoelectronics
T2  - Optoelectronics and Advanced Materials, Rapid Communications
T1  - Far infrared reflectivity spectra of lead-telluride doped with Mn and Yb
EP  - 366
IS  - 5-6
SP  - 362
VL  - 7
UR  - https://hdl.handle.net/21.15107/rcub_dais_374
ER  - 

@article{
author = "Nikolić, Pantelija M. and Paraskevopoulos, K.M. and Zorba, T.T. and Vasiljević, Zorka Z and Pavlidou, E. and Vujatović, Stevan S and Blagojević, V. and Aleksić, Obrad and Nikolić, Maria Vesna",
year = "2013",
abstract = "PbTe single crystal samples doped with Mn and Yb were grown using the Bridgman method. Far infrared reflectivity spectra were measured at room temperature for samples with different impurity concentrations (total impurity concentration Mn+Yb varied between 0.59 and 2.52 at%, while the impurity Mn/Yb ratio varied between 0 and 3.48). All samples were of the "p" type. Plasma minimum was registered for all samples and varied between 114 and 198 cm(-1) depending on the total impurity concentration and ratio. Samples with lower plasma minimum had a higher free hole mobility, with the highest value of 7000 cm(2)/Vs determined for a sample with the highest Mn/Yb ratio of 3.48 (1.67 at.% Mn and 0.48 at.% Yb).",
publisher = "National Institute of Optoelectronics",
journal = "Optoelectronics and Advanced Materials, Rapid Communications",
title = "Far infrared reflectivity spectra of lead-telluride doped with Mn and Yb",
pages = "366-362",
number = "5-6",
volume = "7",
url = "https://hdl.handle.net/21.15107/rcub_dais_374"
}

Nikolić, P. M., Paraskevopoulos, K.M., Zorba, T.T., Vasiljević, Z. Z., Pavlidou, E., Vujatović, S. S., Blagojević, V., Aleksić, O.,& Nikolić, M. V.. (2013). Far infrared reflectivity spectra of lead-telluride doped with Mn and Yb. in Optoelectronics and Advanced Materials, Rapid Communications
National Institute of Optoelectronics., 7(5-6), 362-366.
https://hdl.handle.net/21.15107/rcub_dais_374

Nikolić PM, Paraskevopoulos K, Zorba T, Vasiljević ZZ, Pavlidou E, Vujatović SS, Blagojević V, Aleksić O, Nikolić MV. Far infrared reflectivity spectra of lead-telluride doped with Mn and Yb. in Optoelectronics and Advanced Materials, Rapid Communications. 2013;7(5-6):362-366.
https://hdl.handle.net/21.15107/rcub_dais_374 .

Nikolić, Pantelija M., Paraskevopoulos, K.M., Zorba, T.T., Vasiljević, Zorka Z, Pavlidou, E., Vujatović, Stevan S, Blagojević, V., Aleksić, Obrad, Nikolić, Maria Vesna, "Far infrared reflectivity spectra of lead-telluride doped with Mn and Yb" in Optoelectronics and Advanced Materials, Rapid Communications, 7, no. 5-6 (2013):362-366,
https://hdl.handle.net/21.15107/rcub_dais_374 .

TY  - JOUR
AU  - Savić, Slavica M.
AU  - Nikolić, Maria Vesna
AU  - Paraskevopoulos, K.M.
AU  - Zorba, T.T.
AU  - Nikolić, Nenad
AU  - Blagojević, Vladimir D
AU  - Aleksić, Obrad
AU  - Branković, Goran
PY  - 2013
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/727
AB  - Nickel manganite powder synthesized by calcination of a stoichiometric mixture of manganese (MnO Aldrich 99.9%) and nickel oxide (NiO Merck, 99.5%) containing 0.5 wt% CoO and Fe2O3, was additionally mechanically activated in a high energy planetary ball mill for 5-60 min. The resulting powders were uniaxially pressed into disc shape pellets and then sintered for 60 min at 900 degrees C, 1050 degrees C and 1200 degrees C. Morphological changes of the obtained nickel manganite ceramics induced by mechanical activation were monitored using scanning electron microscopy, while changes in structural characteristics were followed using X-ray powder diffraction. Room temperature far infrared reflectivity spectra for all sintered samples were recorded in the frequency range between 50 cm(-1) land 1200 cm(-1). The observed spectra for all samples showed the presence of the same oscillators, but their intensities depended on the sintering temperature and the time of mechanical acivation. Transversal and longitudinal optical modes were calculated for six ionic oscillators (four strong, and two shoulders) belonging to the nickel manganite partially inverse spinel structure.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Far infrared and micro structural studies of mechanically activated nickel manganite
EP  - 1247
IS  - 2
SP  - 1241
VL  - 39
DO  - 10.1016/j.ceramint.2012.07.054
ER  - 

@article{
author = "Savić, Slavica M. and Nikolić, Maria Vesna and Paraskevopoulos, K.M. and Zorba, T.T. and Nikolić, Nenad and Blagojević, Vladimir D and Aleksić, Obrad and Branković, Goran",
year = "2013",
abstract = "Nickel manganite powder synthesized by calcination of a stoichiometric mixture of manganese (MnO Aldrich 99.9%) and nickel oxide (NiO Merck, 99.5%) containing 0.5 wt% CoO and Fe2O3, was additionally mechanically activated in a high energy planetary ball mill for 5-60 min. The resulting powders were uniaxially pressed into disc shape pellets and then sintered for 60 min at 900 degrees C, 1050 degrees C and 1200 degrees C. Morphological changes of the obtained nickel manganite ceramics induced by mechanical activation were monitored using scanning electron microscopy, while changes in structural characteristics were followed using X-ray powder diffraction. Room temperature far infrared reflectivity spectra for all sintered samples were recorded in the frequency range between 50 cm(-1) land 1200 cm(-1). The observed spectra for all samples showed the presence of the same oscillators, but their intensities depended on the sintering temperature and the time of mechanical acivation. Transversal and longitudinal optical modes were calculated for six ionic oscillators (four strong, and two shoulders) belonging to the nickel manganite partially inverse spinel structure.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Far infrared and micro structural studies of mechanically activated nickel manganite",
pages = "1247-1241",
number = "2",
volume = "39",
doi = "10.1016/j.ceramint.2012.07.054"
}

Savić, S. M., Nikolić, M. V., Paraskevopoulos, K.M., Zorba, T.T., Nikolić, N., Blagojević, V. D., Aleksić, O.,& Branković, G.. (2013). Far infrared and micro structural studies of mechanically activated nickel manganite. in Ceramics International
Elsevier Sci Ltd, Oxford., 39(2), 1241-1247.
https://doi.org/10.1016/j.ceramint.2012.07.054

Savić SM, Nikolić MV, Paraskevopoulos K, Zorba T, Nikolić N, Blagojević VD, Aleksić O, Branković G. Far infrared and micro structural studies of mechanically activated nickel manganite. in Ceramics International. 2013;39(2):1241-1247.
doi:10.1016/j.ceramint.2012.07.054 .

Savić, Slavica M., Nikolić, Maria Vesna, Paraskevopoulos, K.M., Zorba, T.T., Nikolić, Nenad, Blagojević, Vladimir D, Aleksić, Obrad, Branković, Goran, "Far infrared and micro structural studies of mechanically activated nickel manganite" in Ceramics International, 39, no. 2 (2013):1241-1247,
https://doi.org/10.1016/j.ceramint.2012.07.054 . .

TY  - CONF
AU  - Nikolić, Maria Vesna
AU  - Paraskevopoulos, K.M.
AU  - Hatzikraniotis, E.
AU  - Nikolić, Nenad
AU  - Vujatović, Stevan S
AU  - Aleksić, Obrad
AU  - Zorba, T.T.
AU  - Kyratsi, Th.
AU  - Menicanin, Aleksandar
AU  - Nikolić, Pantelija M.
PY  - 2012
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/602
AB  - Understanding the properties of PbTe remains in focus as enhancement of thermoelectric efficiency of this material is studied extensively. In this work single crystals of PbTe, doped with less than 2 at % Br, were synthesized using the Bridgmann technique and their thermal, electron transport and far infrared properties were studied. Thermal diffusivity was determined using the photoacoustic method with a transmission detection configuration. Electron transport was determined by Seebeck coefficient measurements. IR reflectivity measurements showed that reflectivity in the region of plasma resonance was low. Measured reflectivity diagrams were numerically analyzed - enabling calculation of the carrier concentration and mobility-and compared with the values obtained by Hall measurements.
PB  - Amer Inst Physics, Melville
C3  - 9th European Conference on Thermoelectrics (Ect2011)
T1  - Thermal, Electron Transport and Far Infrared Properties of PbTe Single Crystals Doped with Br
EP  - 146
SP  - 143
VL  - 1449
DO  - 10.1063/1.4731517
ER  - 

@conference{
author = "Nikolić, Maria Vesna and Paraskevopoulos, K.M. and Hatzikraniotis, E. and Nikolić, Nenad and Vujatović, Stevan S and Aleksić, Obrad and Zorba, T.T. and Kyratsi, Th. and Menicanin, Aleksandar and Nikolić, Pantelija M.",
year = "2012",
abstract = "Understanding the properties of PbTe remains in focus as enhancement of thermoelectric efficiency of this material is studied extensively. In this work single crystals of PbTe, doped with less than 2 at % Br, were synthesized using the Bridgmann technique and their thermal, electron transport and far infrared properties were studied. Thermal diffusivity was determined using the photoacoustic method with a transmission detection configuration. Electron transport was determined by Seebeck coefficient measurements. IR reflectivity measurements showed that reflectivity in the region of plasma resonance was low. Measured reflectivity diagrams were numerically analyzed - enabling calculation of the carrier concentration and mobility-and compared with the values obtained by Hall measurements.",
publisher = "Amer Inst Physics, Melville",
journal = "9th European Conference on Thermoelectrics (Ect2011)",
title = "Thermal, Electron Transport and Far Infrared Properties of PbTe Single Crystals Doped with Br",
pages = "146-143",
volume = "1449",
doi = "10.1063/1.4731517"
}

Nikolić, M. V., Paraskevopoulos, K.M., Hatzikraniotis, E., Nikolić, N., Vujatović, S. S., Aleksić, O., Zorba, T.T., Kyratsi, Th., Menicanin, A.,& Nikolić, P. M.. (2012). Thermal, Electron Transport and Far Infrared Properties of PbTe Single Crystals Doped with Br. in 9th European Conference on Thermoelectrics (Ect2011)
Amer Inst Physics, Melville., 1449, 143-146.
https://doi.org/10.1063/1.4731517

Nikolić MV, Paraskevopoulos K, Hatzikraniotis E, Nikolić N, Vujatović SS, Aleksić O, Zorba T, Kyratsi T, Menicanin A, Nikolić PM. Thermal, Electron Transport and Far Infrared Properties of PbTe Single Crystals Doped with Br. in 9th European Conference on Thermoelectrics (Ect2011). 2012;1449:143-146.
doi:10.1063/1.4731517 .

Nikolić, Maria Vesna, Paraskevopoulos, K.M., Hatzikraniotis, E., Nikolić, Nenad, Vujatović, Stevan S, Aleksić, Obrad, Zorba, T.T., Kyratsi, Th., Menicanin, Aleksandar, Nikolić, Pantelija M., "Thermal, Electron Transport and Far Infrared Properties of PbTe Single Crystals Doped with Br" in 9th European Conference on Thermoelectrics (Ect2011), 1449 (2012):143-146,
https://doi.org/10.1063/1.4731517 . .

TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Paraskevopoulos, K.M.
AU  - Aleksić, Obrad
AU  - Vujatović, Stevan S
AU  - Vasiljević-Radović, Dana
AU  - Zorba, T.T.
AU  - Blagojević, V.
AU  - Nikolić, Nenad
AU  - Radovanović, M.
AU  - Nikolić, Maria Vesna
PY  - 2012
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/621
AB  - Single crystal samples of PbTe doped with PbI2 were made using the Bridgman technique. Far infrared reflectivity diagrams of PbTe doped with 0.4 at% and 0.6 at% Iodine were measured and numerically analyzed. A plasma resonance at about 650 cm(-1) with the reflectivity minima very close to zero was observed for both samples. Thermal diffusivity was determined for the same samples using the photoacoustic method with a transmission detection configuration and the values of the minority free carrier (holes) mobility were calculated.
PB  - National Institute of Optoelectronics
T2  - Optoelectronics and Advanced Materials, Rapid Communications
T1  - Far infrared and photoacoustic characterization of iodine doped PbTe
EP  - 356
IS  - 3-4
SP  - 352
VL  - 6
UR  - https://hdl.handle.net/21.15107/rcub_cer_942
ER  - 

@article{
author = "Nikolić, Pantelija M. and Paraskevopoulos, K.M. and Aleksić, Obrad and Vujatović, Stevan S and Vasiljević-Radović, Dana and Zorba, T.T. and Blagojević, V. and Nikolić, Nenad and Radovanović, M. and Nikolić, Maria Vesna",
year = "2012",
abstract = "Single crystal samples of PbTe doped with PbI2 were made using the Bridgman technique. Far infrared reflectivity diagrams of PbTe doped with 0.4 at% and 0.6 at% Iodine were measured and numerically analyzed. A plasma resonance at about 650 cm(-1) with the reflectivity minima very close to zero was observed for both samples. Thermal diffusivity was determined for the same samples using the photoacoustic method with a transmission detection configuration and the values of the minority free carrier (holes) mobility were calculated.",
publisher = "National Institute of Optoelectronics",
journal = "Optoelectronics and Advanced Materials, Rapid Communications",
title = "Far infrared and photoacoustic characterization of iodine doped PbTe",
pages = "356-352",
number = "3-4",
volume = "6",
url = "https://hdl.handle.net/21.15107/rcub_cer_942"
}

Nikolić, P. M., Paraskevopoulos, K.M., Aleksić, O., Vujatović, S. S., Vasiljević-Radović, D., Zorba, T.T., Blagojević, V., Nikolić, N., Radovanović, M.,& Nikolić, M. V.. (2012). Far infrared and photoacoustic characterization of iodine doped PbTe. in Optoelectronics and Advanced Materials, Rapid Communications
National Institute of Optoelectronics., 6(3-4), 352-356.
https://hdl.handle.net/21.15107/rcub_cer_942

Nikolić PM, Paraskevopoulos K, Aleksić O, Vujatović SS, Vasiljević-Radović D, Zorba T, Blagojević V, Nikolić N, Radovanović M, Nikolić MV. Far infrared and photoacoustic characterization of iodine doped PbTe. in Optoelectronics and Advanced Materials, Rapid Communications. 2012;6(3-4):352-356.
https://hdl.handle.net/21.15107/rcub_cer_942 .

Nikolić, Pantelija M., Paraskevopoulos, K.M., Aleksić, Obrad, Vujatović, Stevan S, Vasiljević-Radović, Dana, Zorba, T.T., Blagojević, V., Nikolić, Nenad, Radovanović, M., Nikolić, Maria Vesna, "Far infrared and photoacoustic characterization of iodine doped PbTe" in Optoelectronics and Advanced Materials, Rapid Communications, 6, no. 3-4 (2012):352-356,
https://hdl.handle.net/21.15107/rcub_cer_942 .

TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Paraskevopoulos, K.M.
AU  - Zachariadis, G
AU  - Valasiadis, O
AU  - Zorba, T.T.
AU  - Vujatović, Stevan S
AU  - Nikolić, Nenad
AU  - Aleksić, Obrad
AU  - Ivetić, Tamara B.
AU  - Cvetković, Olga G
AU  - Blagojević, Vladimir D
AU  - Nikolić, Maria Vesna
PY  - 2012
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/507
AB  - PbTe single crystals, doped with B, were grown using the Bridgman method. Far infrared spectra were measured in the temperature range between 10 K and room temperature. The experimental spectra were numerically analyzed, and optical parameters were calculated. Local impurity modes of boron were observed at about 150 and 240 cm(-1). For all samples, after FIR measurements, the content of boron was measured using inductively coupled plasma atomic emission spectrometry. Optical mobility of free carriers was calculated and it was the highest for the sample with only 0.014 at.% of boron in PbTe. A negative photoconductivity effect at 130 K for PbTe + B was also observed.
PB  - Springer, New York
T2  - Journal of Materials Science
T1  - Far infrared study of local impurity modes of Boron-doped PbTe
EP  - 2389
IS  - 5
SP  - 2384
VL  - 47
DO  - 10.1007/s10853-011-6057-8
ER  - 

@article{
author = "Nikolić, Pantelija M. and Paraskevopoulos, K.M. and Zachariadis, G and Valasiadis, O and Zorba, T.T. and Vujatović, Stevan S and Nikolić, Nenad and Aleksić, Obrad and Ivetić, Tamara B. and Cvetković, Olga G and Blagojević, Vladimir D and Nikolić, Maria Vesna",
year = "2012",
abstract = "PbTe single crystals, doped with B, were grown using the Bridgman method. Far infrared spectra were measured in the temperature range between 10 K and room temperature. The experimental spectra were numerically analyzed, and optical parameters were calculated. Local impurity modes of boron were observed at about 150 and 240 cm(-1). For all samples, after FIR measurements, the content of boron was measured using inductively coupled plasma atomic emission spectrometry. Optical mobility of free carriers was calculated and it was the highest for the sample with only 0.014 at.% of boron in PbTe. A negative photoconductivity effect at 130 K for PbTe + B was also observed.",
publisher = "Springer, New York",
journal = "Journal of Materials Science",
title = "Far infrared study of local impurity modes of Boron-doped PbTe",
pages = "2389-2384",
number = "5",
volume = "47",
doi = "10.1007/s10853-011-6057-8"
}

Nikolić, P. M., Paraskevopoulos, K.M., Zachariadis, G., Valasiadis, O., Zorba, T.T., Vujatović, S. S., Nikolić, N., Aleksić, O., Ivetić, T. B., Cvetković, O. G., Blagojević, V. D.,& Nikolić, M. V.. (2012). Far infrared study of local impurity modes of Boron-doped PbTe. in Journal of Materials Science
Springer, New York., 47(5), 2384-2389.
https://doi.org/10.1007/s10853-011-6057-8

Nikolić PM, Paraskevopoulos K, Zachariadis G, Valasiadis O, Zorba T, Vujatović SS, Nikolić N, Aleksić O, Ivetić TB, Cvetković OG, Blagojević VD, Nikolić MV. Far infrared study of local impurity modes of Boron-doped PbTe. in Journal of Materials Science. 2012;47(5):2384-2389.
doi:10.1007/s10853-011-6057-8 .

Nikolić, Pantelija M., Paraskevopoulos, K.M., Zachariadis, G, Valasiadis, O, Zorba, T.T., Vujatović, Stevan S, Nikolić, Nenad, Aleksić, Obrad, Ivetić, Tamara B., Cvetković, Olga G, Blagojević, Vladimir D, Nikolić, Maria Vesna, "Far infrared study of local impurity modes of Boron-doped PbTe" in Journal of Materials Science, 47, no. 5 (2012):2384-2389,
https://doi.org/10.1007/s10853-011-6057-8 . .

TY  - CONF
AU  - Savic, Slavica
AU  - Nikolić, Maria Vesna
AU  - Paraskevopoulos, K.M.
AU  - Zorba, T.T.
AU  - Vojisavljević, Katarina
PY  - 2011
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2783
AB  - Nickel manganite powder was mechanically activated in a high energy planetary ball
mill for 5-60 min. Then the powders were pressed and sintered for 60 minutes at 9000C,
10500C and 12000C. Morphological changes of nickel manganite ceramics were monitored
using scanning electron microscopy, while changes in structural characteristics were followed
using X-ray diffraction. Far infrared reflectivity spectra at room temperature for all sintered
samples were recorded in the frequency range between 50 and 1200 cm-1. Transversal and
longitudinal optical modes were calculated for six ionic oscillators (four strong, and two
shoulders) belonging to the partially inverse spinel structure of nickel manganite.
PB  - Institute for Multidisciplinary Research, University of Belgrade
C3  - 1st Conference of Serbian Society for Ceramic Materials
T1  - FAR INFRARED AND MICROSTRUCTURAL STUDIES OF MECHANICALLY ACTIVATED NICKEL MANGANITE
EP  - 61
SP  - 61
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2783
ER  - 

@conference{
author = "Savic, Slavica and Nikolić, Maria Vesna and Paraskevopoulos, K.M. and Zorba, T.T. and Vojisavljević, Katarina",
year = "2011",
abstract = "Nickel manganite powder was mechanically activated in a high energy planetary ball
mill for 5-60 min. Then the powders were pressed and sintered for 60 minutes at 9000C,
10500C and 12000C. Morphological changes of nickel manganite ceramics were monitored
using scanning electron microscopy, while changes in structural characteristics were followed
using X-ray diffraction. Far infrared reflectivity spectra at room temperature for all sintered
samples were recorded in the frequency range between 50 and 1200 cm-1. Transversal and
longitudinal optical modes were calculated for six ionic oscillators (four strong, and two
shoulders) belonging to the partially inverse spinel structure of nickel manganite.",
publisher = "Institute for Multidisciplinary Research, University of Belgrade",
journal = "1st Conference of Serbian Society for Ceramic Materials",
title = "FAR INFRARED AND MICROSTRUCTURAL STUDIES OF MECHANICALLY ACTIVATED NICKEL MANGANITE",
pages = "61-61",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2783"
}

Savic, S., Nikolić, M. V., Paraskevopoulos, K.M., Zorba, T.T.,& Vojisavljević, K.. (2011). FAR INFRARED AND MICROSTRUCTURAL STUDIES OF MECHANICALLY ACTIVATED NICKEL MANGANITE. in 1st Conference of Serbian Society for Ceramic Materials
Institute for Multidisciplinary Research, University of Belgrade., 61-61.
https://hdl.handle.net/21.15107/rcub_rimsi_2783

Savic S, Nikolić MV, Paraskevopoulos K, Zorba T, Vojisavljević K. FAR INFRARED AND MICROSTRUCTURAL STUDIES OF MECHANICALLY ACTIVATED NICKEL MANGANITE. in 1st Conference of Serbian Society for Ceramic Materials. 2011;:61-61.
https://hdl.handle.net/21.15107/rcub_rimsi_2783 .

Savic, Slavica, Nikolić, Maria Vesna, Paraskevopoulos, K.M., Zorba, T.T., Vojisavljević, Katarina, "FAR INFRARED AND MICROSTRUCTURAL STUDIES OF MECHANICALLY ACTIVATED NICKEL MANGANITE" in 1st Conference of Serbian Society for Ceramic Materials (2011):61-61,
https://hdl.handle.net/21.15107/rcub_rimsi_2783 .

TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Paraskevopoulos, K.M.
AU  - Pavlidou, E.
AU  - Zorba, T.T.
AU  - Ivetić, Tamara B.
AU  - Vujatović, Stevan S
AU  - Aleksić, Obrad
AU  - Nikolić, Nenad
AU  - Cvetković, Olga G
AU  - Blagojević, Vladimir D
AU  - Nikolić, Maria Vesna
PY  - 2011
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/456
AB  - Far infrared reflectivity spectra of polycrystalline In1-xGaxSb were measured and numerically analyzed using the classical dispersion formula and also a fitting procedure based on the modified plasmon-phonon interaction model in the temperature range from 10 K to 300 K. Optical parameters were calculated and discussed. A local mode belonging to the GaSb rich end and two-mode behavior were observed at low temperatures.
PB  - Elsevier Science Sa, Lausanne
T2  - Materials Chemistry and Physics
T1  - Temperature dependence of In1-xGaxSb reflectivity in the far infrared
EP  - 76
IS  - 1-2
SP  - 72
VL  - 125
DO  - 10.1016/j.matchemphys.2010.08.073
ER  - 

@article{
author = "Nikolić, Pantelija M. and Paraskevopoulos, K.M. and Pavlidou, E. and Zorba, T.T. and Ivetić, Tamara B. and Vujatović, Stevan S and Aleksić, Obrad and Nikolić, Nenad and Cvetković, Olga G and Blagojević, Vladimir D and Nikolić, Maria Vesna",
year = "2011",
abstract = "Far infrared reflectivity spectra of polycrystalline In1-xGaxSb were measured and numerically analyzed using the classical dispersion formula and also a fitting procedure based on the modified plasmon-phonon interaction model in the temperature range from 10 K to 300 K. Optical parameters were calculated and discussed. A local mode belonging to the GaSb rich end and two-mode behavior were observed at low temperatures.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Materials Chemistry and Physics",
title = "Temperature dependence of In1-xGaxSb reflectivity in the far infrared",
pages = "76-72",
number = "1-2",
volume = "125",
doi = "10.1016/j.matchemphys.2010.08.073"
}

Nikolić, P. M., Paraskevopoulos, K.M., Pavlidou, E., Zorba, T.T., Ivetić, T. B., Vujatović, S. S., Aleksić, O., Nikolić, N., Cvetković, O. G., Blagojević, V. D.,& Nikolić, M. V.. (2011). Temperature dependence of In1-xGaxSb reflectivity in the far infrared. in Materials Chemistry and Physics
Elsevier Science Sa, Lausanne., 125(1-2), 72-76.
https://doi.org/10.1016/j.matchemphys.2010.08.073

Nikolić PM, Paraskevopoulos K, Pavlidou E, Zorba T, Ivetić TB, Vujatović SS, Aleksić O, Nikolić N, Cvetković OG, Blagojević VD, Nikolić MV. Temperature dependence of In1-xGaxSb reflectivity in the far infrared. in Materials Chemistry and Physics. 2011;125(1-2):72-76.
doi:10.1016/j.matchemphys.2010.08.073 .

Nikolić, Pantelija M., Paraskevopoulos, K.M., Pavlidou, E., Zorba, T.T., Ivetić, Tamara B., Vujatović, Stevan S, Aleksić, Obrad, Nikolić, Nenad, Cvetković, Olga G, Blagojević, Vladimir D, Nikolić, Maria Vesna, "Temperature dependence of In1-xGaxSb reflectivity in the far infrared" in Materials Chemistry and Physics, 125, no. 1-2 (2011):72-76,
https://doi.org/10.1016/j.matchemphys.2010.08.073 . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Paraskevopoulos, K.M.
AU  - Ivetić, Tamara B.
AU  - Zorba, T.T.
AU  - Vujatović, Stevan S
AU  - Pavlidou, E.
AU  - Blagojević, Vladimir D
AU  - Bojicic, Aleksandar
AU  - Aleksić, Obrad
AU  - Nikolić, Nenad
AU  - Koenig, W
AU  - Nikolić, Pantelija M.
PY  - 2010
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/376
AB  - Single crystals of lead telluride doped with Nd were synthesized using the Bridgeman method. Room temperature far infrared reflectivity spectra were measured for PbTe samples with Nd content in the range 0.2-0.9 at.%. Optical reflectivity in the far infrared range was measured in the temperature range between 10 and 300 K for a highly polished PbTe sample with 0.6 at.% Nd. The experimental diagrams were numerically analyzed with a fitting procedure using a modified plasmon-phonon model. Two local modes were noted and their origin was discussed. Optical electron mobility was calculated for all analyzed samples.
PB  - Springer, New York
T2  - Journal of Materials Science
T1  - Optical properties of PbTe doped with Nd
EP  - 5914
IS  - 21
SP  - 5910
VL  - 45
DO  - 10.1007/s10853-010-4670-6
ER  - 

@article{
author = "Nikolić, Maria Vesna and Paraskevopoulos, K.M. and Ivetić, Tamara B. and Zorba, T.T. and Vujatović, Stevan S and Pavlidou, E. and Blagojević, Vladimir D and Bojicic, Aleksandar and Aleksić, Obrad and Nikolić, Nenad and Koenig, W and Nikolić, Pantelija M.",
year = "2010",
abstract = "Single crystals of lead telluride doped with Nd were synthesized using the Bridgeman method. Room temperature far infrared reflectivity spectra were measured for PbTe samples with Nd content in the range 0.2-0.9 at.%. Optical reflectivity in the far infrared range was measured in the temperature range between 10 and 300 K for a highly polished PbTe sample with 0.6 at.% Nd. The experimental diagrams were numerically analyzed with a fitting procedure using a modified plasmon-phonon model. Two local modes were noted and their origin was discussed. Optical electron mobility was calculated for all analyzed samples.",
publisher = "Springer, New York",
journal = "Journal of Materials Science",
title = "Optical properties of PbTe doped with Nd",
pages = "5914-5910",
number = "21",
volume = "45",
doi = "10.1007/s10853-010-4670-6"
}

Nikolić, M. V., Paraskevopoulos, K.M., Ivetić, T. B., Zorba, T.T., Vujatović, S. S., Pavlidou, E., Blagojević, V. D., Bojicic, A., Aleksić, O., Nikolić, N., Koenig, W.,& Nikolić, P. M.. (2010). Optical properties of PbTe doped with Nd. in Journal of Materials Science
Springer, New York., 45(21), 5910-5914.
https://doi.org/10.1007/s10853-010-4670-6

Nikolić MV, Paraskevopoulos K, Ivetić TB, Zorba T, Vujatović SS, Pavlidou E, Blagojević VD, Bojicic A, Aleksić O, Nikolić N, Koenig W, Nikolić PM. Optical properties of PbTe doped with Nd. in Journal of Materials Science. 2010;45(21):5910-5914.
doi:10.1007/s10853-010-4670-6 .

Nikolić, Maria Vesna, Paraskevopoulos, K.M., Ivetić, Tamara B., Zorba, T.T., Vujatović, Stevan S, Pavlidou, E., Blagojević, Vladimir D, Bojicic, Aleksandar, Aleksić, Obrad, Nikolić, Nenad, Koenig, W, Nikolić, Pantelija M., "Optical properties of PbTe doped with Nd" in Journal of Materials Science, 45, no. 21 (2010):5910-5914,
https://doi.org/10.1007/s10853-010-4670-6 . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Vujatović, Stevan S
AU  - Ivetić, Tamara B.
AU  - Paraskevopoulos, K.M.
AU  - Zorba, T.T.
AU  - Aleksić, Obrad
AU  - Blagojević, V.
AU  - Nikolić, N.
AU  - Nikolić, Pantelija M.
PY  - 2010
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/398
AB  - In this paper are presented the far-infrared reflectivity spectra for a cleaved FeS2 sample measured at roam temperature and at 77 K.
PB  - National Institute of Optoelectronics
T2  - Optoelectronics and Advanced Materials, Rapid Communications
T1  - Optical far infrared properties of FeS2
EP  - 2002
IS  - 12
SP  - 2000
VL  - 4
UR  - https://hdl.handle.net/21.15107/rcub_dais_3409
ER  - 

@article{
author = "Nikolić, Maria Vesna and Vujatović, Stevan S and Ivetić, Tamara B. and Paraskevopoulos, K.M. and Zorba, T.T. and Aleksić, Obrad and Blagojević, V. and Nikolić, N. and Nikolić, Pantelija M.",
year = "2010",
abstract = "In this paper are presented the far-infrared reflectivity spectra for a cleaved FeS2 sample measured at roam temperature and at 77 K.",
publisher = "National Institute of Optoelectronics",
journal = "Optoelectronics and Advanced Materials, Rapid Communications",
title = "Optical far infrared properties of FeS2",
pages = "2002-2000",
number = "12",
volume = "4",
url = "https://hdl.handle.net/21.15107/rcub_dais_3409"
}

Nikolić, M. V., Vujatović, S. S., Ivetić, T. B., Paraskevopoulos, K.M., Zorba, T.T., Aleksić, O., Blagojević, V., Nikolić, N.,& Nikolić, P. M.. (2010). Optical far infrared properties of FeS2. in Optoelectronics and Advanced Materials, Rapid Communications
National Institute of Optoelectronics., 4(12), 2000-2002.
https://hdl.handle.net/21.15107/rcub_dais_3409

Nikolić MV, Vujatović SS, Ivetić TB, Paraskevopoulos K, Zorba T, Aleksić O, Blagojević V, Nikolić N, Nikolić PM. Optical far infrared properties of FeS2. in Optoelectronics and Advanced Materials, Rapid Communications. 2010;4(12):2000-2002.
https://hdl.handle.net/21.15107/rcub_dais_3409 .

Nikolić, Maria Vesna, Vujatović, Stevan S, Ivetić, Tamara B., Paraskevopoulos, K.M., Zorba, T.T., Aleksić, Obrad, Blagojević, V., Nikolić, N., Nikolić, Pantelija M., "Optical far infrared properties of FeS2" in Optoelectronics and Advanced Materials, Rapid Communications, 4, no. 12 (2010):2000-2002,
https://hdl.handle.net/21.15107/rcub_dais_3409 .

TY  - JOUR
AU  - Nikolić, N.
AU  - Vujatović, Stevan S
AU  - Ivetić, Tamara B.
AU  - Paraskevopoulos, K.M.
AU  - Zorba, T.T.
AU  - Aleksić, Obrad
AU  - Blagojević, V.
AU  - Nikolić, Maria Vesna
AU  - Nikolić, Pantelija M.
PY  - 2010
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/394
AB  - Far infrared reflection spectra measured at room temperature were used to investigate vibrational properties of PtSb2 single crystals. The experimental results were analyzed using a dielectric function taking into account the existence of plasmon-ionised impurity-phonon interactions. Together with strong coupling three infrared active lattice modes at about 143, 187 and 202 cm(-1) were observed. These results were discussed with respect to calculated literature vibrational frequencies. Electrical properties of single crystal PtSb2 were also measured at room temperature.
PB  - National Institute of Optoelectronics
T2  - Optoelectronics and Advanced Materials, Rapid Communications
T1  - Optical far infrared properties of PtSb2
EP  - 670
IS  - 5
SP  - 668
VL  - 4
UR  - https://hdl.handle.net/21.15107/rcub_dais_3420
ER  - 

@article{
author = "Nikolić, N. and Vujatović, Stevan S and Ivetić, Tamara B. and Paraskevopoulos, K.M. and Zorba, T.T. and Aleksić, Obrad and Blagojević, V. and Nikolić, Maria Vesna and Nikolić, Pantelija M.",
year = "2010",
abstract = "Far infrared reflection spectra measured at room temperature were used to investigate vibrational properties of PtSb2 single crystals. The experimental results were analyzed using a dielectric function taking into account the existence of plasmon-ionised impurity-phonon interactions. Together with strong coupling three infrared active lattice modes at about 143, 187 and 202 cm(-1) were observed. These results were discussed with respect to calculated literature vibrational frequencies. Electrical properties of single crystal PtSb2 were also measured at room temperature.",
publisher = "National Institute of Optoelectronics",
journal = "Optoelectronics and Advanced Materials, Rapid Communications",
title = "Optical far infrared properties of PtSb2",
pages = "670-668",
number = "5",
volume = "4",
url = "https://hdl.handle.net/21.15107/rcub_dais_3420"
}

Nikolić, N., Vujatović, S. S., Ivetić, T. B., Paraskevopoulos, K.M., Zorba, T.T., Aleksić, O., Blagojević, V., Nikolić, M. V.,& Nikolić, P. M.. (2010). Optical far infrared properties of PtSb2. in Optoelectronics and Advanced Materials, Rapid Communications
National Institute of Optoelectronics., 4(5), 668-670.
https://hdl.handle.net/21.15107/rcub_dais_3420

Nikolić N, Vujatović SS, Ivetić TB, Paraskevopoulos K, Zorba T, Aleksić O, Blagojević V, Nikolić MV, Nikolić PM. Optical far infrared properties of PtSb2. in Optoelectronics and Advanced Materials, Rapid Communications. 2010;4(5):668-670.
https://hdl.handle.net/21.15107/rcub_dais_3420 .

Nikolić, N., Vujatović, Stevan S, Ivetić, Tamara B., Paraskevopoulos, K.M., Zorba, T.T., Aleksić, Obrad, Blagojević, V., Nikolić, Maria Vesna, Nikolić, Pantelija M., "Optical far infrared properties of PtSb2" in Optoelectronics and Advanced Materials, Rapid Communications, 4, no. 5 (2010):668-670,
https://hdl.handle.net/21.15107/rcub_dais_3420 .

TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Paraskevopoulos, K.M.
AU  - Nikolić, Maria Vesna
AU  - Vujatović, Stevan S
AU  - Zorba, T.T.
AU  - Chatzistavrou, X.
AU  - Stamenović, B.
AU  - Luković Golić, Danijela
AU  - Blagojević, V.
AU  - Bojicic, Aleksandar
PY  - 2009
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/363
AB  - Single crystal samples of lead telluride doped with Pr were produced using the Bridgman method. Far infrared spectra of the samples doped with 0.15 at%, 0.25 at% and 0.6 at% Pr are presented. The experimental data were numerically analyzed using a fitting procedure based on the plasmon-phonon interaction model and optical parameters were determined. Two local modes of praseodium were observed at about 158 cm(-1) and 257 cm(-1) at room temperature. The origin of the local modes was discussed.
PB  - Elsevier Science Sa, Lausanne
T2  - Materials Chemistry and Physics
T1  - Far infrared study of impurity local modes in Pr doped PbTe
EP  - 187
IS  - 1
SP  - 185
VL  - 114
DO  - 10.1016/j.matchemphys.2008.09.006
ER  - 

@article{
author = "Nikolić, Pantelija M. and Paraskevopoulos, K.M. and Nikolić, Maria Vesna and Vujatović, Stevan S and Zorba, T.T. and Chatzistavrou, X. and Stamenović, B. and Luković Golić, Danijela and Blagojević, V. and Bojicic, Aleksandar",
year = "2009",
abstract = "Single crystal samples of lead telluride doped with Pr were produced using the Bridgman method. Far infrared spectra of the samples doped with 0.15 at%, 0.25 at% and 0.6 at% Pr are presented. The experimental data were numerically analyzed using a fitting procedure based on the plasmon-phonon interaction model and optical parameters were determined. Two local modes of praseodium were observed at about 158 cm(-1) and 257 cm(-1) at room temperature. The origin of the local modes was discussed.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Materials Chemistry and Physics",
title = "Far infrared study of impurity local modes in Pr doped PbTe",
pages = "187-185",
number = "1",
volume = "114",
doi = "10.1016/j.matchemphys.2008.09.006"
}

Nikolić, P. M., Paraskevopoulos, K.M., Nikolić, M. V., Vujatović, S. S., Zorba, T.T., Chatzistavrou, X., Stamenović, B., Luković Golić, D., Blagojević, V.,& Bojicic, A.. (2009). Far infrared study of impurity local modes in Pr doped PbTe. in Materials Chemistry and Physics
Elsevier Science Sa, Lausanne., 114(1), 185-187.
https://doi.org/10.1016/j.matchemphys.2008.09.006

Nikolić PM, Paraskevopoulos K, Nikolić MV, Vujatović SS, Zorba T, Chatzistavrou X, Stamenović B, Luković Golić D, Blagojević V, Bojicic A. Far infrared study of impurity local modes in Pr doped PbTe. in Materials Chemistry and Physics. 2009;114(1):185-187.
doi:10.1016/j.matchemphys.2008.09.006 .

Nikolić, Pantelija M., Paraskevopoulos, K.M., Nikolić, Maria Vesna, Vujatović, Stevan S, Zorba, T.T., Chatzistavrou, X., Stamenović, B., Luković Golić, Danijela, Blagojević, V., Bojicic, Aleksandar, "Far infrared study of impurity local modes in Pr doped PbTe" in Materials Chemistry and Physics, 114, no. 1 (2009):185-187,
https://doi.org/10.1016/j.matchemphys.2008.09.006 . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Obradović, Nina
AU  - Paraskevopoulos, K.M.
AU  - Zorba, T.T.
AU  - Savić, Slavica M.
AU  - Ristic, M.M.
PY  - 2009
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/334
AB  - The starting mixtures of ZnO, TiO2, and MgO (0, 1.25, and 2.5 wt.%) powders are mechanically activated in a high-energy planetary mill for 15 min and then sintered between 800 and 1100 degrees C for 2 h. The influence of MgO addition on the structure of the samples obtained is analyzed with X-ray diffraction and infrared reflection spectroscopy. Room-temperature far-infrared reflectivity spectra of the samples doped with MgO (0, 1.25, and 2.5 wt.%) and sintered at 1100 degrees C in the frequency range between 100 and 1200 cm(-1) are measured and analyzed. Optical parameters are determined for seven oscillators belonging to the spinel structure using the four-parameter model of coupled oscillators. Born effective charges are calculated from the transversal/longitudinal splitting.
PB  - Springer New York LLC
T2  - Powder Metallurgy and Metal Ceramics
T1  - Structural analysis of Zn2TiO4 doped with mgo
EP  - 717
IS  - 11-12
SP  - 712
VL  - 48
DO  - 10.1007/s11106-010-9190-z
ER  - 

@article{
author = "Nikolić, Maria Vesna and Obradović, Nina and Paraskevopoulos, K.M. and Zorba, T.T. and Savić, Slavica M. and Ristic, M.M.",
year = "2009",
abstract = "The starting mixtures of ZnO, TiO2, and MgO (0, 1.25, and 2.5 wt.%) powders are mechanically activated in a high-energy planetary mill for 15 min and then sintered between 800 and 1100 degrees C for 2 h. The influence of MgO addition on the structure of the samples obtained is analyzed with X-ray diffraction and infrared reflection spectroscopy. Room-temperature far-infrared reflectivity spectra of the samples doped with MgO (0, 1.25, and 2.5 wt.%) and sintered at 1100 degrees C in the frequency range between 100 and 1200 cm(-1) are measured and analyzed. Optical parameters are determined for seven oscillators belonging to the spinel structure using the four-parameter model of coupled oscillators. Born effective charges are calculated from the transversal/longitudinal splitting.",
publisher = "Springer New York LLC",
journal = "Powder Metallurgy and Metal Ceramics",
title = "Structural analysis of Zn2TiO4 doped with mgo",
pages = "717-712",
number = "11-12",
volume = "48",
doi = "10.1007/s11106-010-9190-z"
}

Nikolić, M. V., Obradović, N., Paraskevopoulos, K.M., Zorba, T.T., Savić, S. M.,& Ristic, M.M.. (2009). Structural analysis of Zn2TiO4 doped with mgo. in Powder Metallurgy and Metal Ceramics
Springer New York LLC., 48(11-12), 712-717.
https://doi.org/10.1007/s11106-010-9190-z

Nikolić MV, Obradović N, Paraskevopoulos K, Zorba T, Savić SM, Ristic M. Structural analysis of Zn2TiO4 doped with mgo. in Powder Metallurgy and Metal Ceramics. 2009;48(11-12):712-717.
doi:10.1007/s11106-010-9190-z .

Nikolić, Maria Vesna, Obradović, Nina, Paraskevopoulos, K.M., Zorba, T.T., Savić, Slavica M., Ristic, M.M., "Structural analysis of Zn2TiO4 doped with mgo" in Powder Metallurgy and Metal Ceramics, 48, no. 11-12 (2009):712-717,
https://doi.org/10.1007/s11106-010-9190-z . .

TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Paraskevopoulos, K.M.
AU  - Djukic, S. R.
AU  - Vujatović, Stevan S
AU  - Labus, Nebojša J.
AU  - Zorba, T.T.
AU  - Jović, M.
AU  - Nikolić, Maria Vesna
AU  - Bojicic, Aleksandar
AU  - Blagojević, V.
AU  - Stamenović, B.
AU  - Koenig, W.
PY  - 2009
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/361
AB  - PbTe and Pb0.85Sn0.15Te single crystals. doped with Pd, were grown using the Bridgman method. Far infrared spectra were measured in the temperature range between 10 K and 300 K. The experimental spectra were numerically analyzed using first the Kramers-Kronig method and then a fitting procedure, based on the plasmon-phonon interaction model, and the optical parameters were calculated. Since the electronic structure of the ionized state for Pd, Ni and Pt is of the same type, and the influence of cl-shells is very strong, special attention was paid to the influence of the electronic structure of dopants on the final properties PbTe and PbSnTe crystals.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Far infrared study of impurity local modes in palladium-doped PbTe and PbSnTe
EP  - 934
IS  - 1-2
SP  - 930
VL  - 475
DO  - 10.1016/j.jallcom.2008.08.069
ER  - 

@article{
author = "Nikolić, Pantelija M. and Paraskevopoulos, K.M. and Djukic, S. R. and Vujatović, Stevan S and Labus, Nebojša J. and Zorba, T.T. and Jović, M. and Nikolić, Maria Vesna and Bojicic, Aleksandar and Blagojević, V. and Stamenović, B. and Koenig, W.",
year = "2009",
abstract = "PbTe and Pb0.85Sn0.15Te single crystals. doped with Pd, were grown using the Bridgman method. Far infrared spectra were measured in the temperature range between 10 K and 300 K. The experimental spectra were numerically analyzed using first the Kramers-Kronig method and then a fitting procedure, based on the plasmon-phonon interaction model, and the optical parameters were calculated. Since the electronic structure of the ionized state for Pd, Ni and Pt is of the same type, and the influence of cl-shells is very strong, special attention was paid to the influence of the electronic structure of dopants on the final properties PbTe and PbSnTe crystals.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Far infrared study of impurity local modes in palladium-doped PbTe and PbSnTe",
pages = "934-930",
number = "1-2",
volume = "475",
doi = "10.1016/j.jallcom.2008.08.069"
}

Nikolić, P. M., Paraskevopoulos, K.M., Djukic, S. R., Vujatović, S. S., Labus, N. J., Zorba, T.T., Jović, M., Nikolić, M. V., Bojicic, A., Blagojević, V., Stamenović, B.,& Koenig, W.. (2009). Far infrared study of impurity local modes in palladium-doped PbTe and PbSnTe. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 475(1-2), 930-934.
https://doi.org/10.1016/j.jallcom.2008.08.069

Nikolić PM, Paraskevopoulos K, Djukic SR, Vujatović SS, Labus NJ, Zorba T, Jović M, Nikolić MV, Bojicic A, Blagojević V, Stamenović B, Koenig W. Far infrared study of impurity local modes in palladium-doped PbTe and PbSnTe. in Journal of Alloys and Compounds. 2009;475(1-2):930-934.
doi:10.1016/j.jallcom.2008.08.069 .

Nikolić, Pantelija M., Paraskevopoulos, K.M., Djukic, S. R., Vujatović, Stevan S, Labus, Nebojša J., Zorba, T.T., Jović, M., Nikolić, Maria Vesna, Bojicic, Aleksandar, Blagojević, V., Stamenović, B., Koenig, W., "Far infrared study of impurity local modes in palladium-doped PbTe and PbSnTe" in Journal of Alloys and Compounds, 475, no. 1-2 (2009):930-934,
https://doi.org/10.1016/j.jallcom.2008.08.069 . .

TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Paraskevopoulos, K.M.
AU  - Nikolić, Maria Vesna
AU  - Vujatović, Stevan S
AU  - Pavlidou, E.
AU  - Zorba, T.T.
AU  - Ivetić, Tamara B.
AU  - Stamenović, B.
AU  - Labus, Nebojša J.
AU  - Jović, M.
AU  - Ristic, M. M.
PY  - 2009
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/336
AB  - Far infrared reflectivity spectra of sintered Pb0.9Sn0.1Te doped with 0.2 and 2 at.% Pd are measured. The experimental results are analyzed using a fitting procedure based on a modified plasmon-phonon interaction model. The values of calculated parameters are compared with literature data for PbTe and PbSnTe single crystal samples doped with palladium and nickel, with the purpose of determining whether the sintered samples can be used in different devices instead of single crystals.
PB  - Springer, New York
T2  - Powder Metallurgy and Metal Ceramics
T1  - Far infrared properties of sintered Pb0.9Sn0.1Te doped with palladium
EP  - 357
IS  - 5-6
SP  - 353
VL  - 48
DO  - 10.1007/s11106-009-9122-y
ER  - 

@article{
author = "Nikolić, Pantelija M. and Paraskevopoulos, K.M. and Nikolić, Maria Vesna and Vujatović, Stevan S and Pavlidou, E. and Zorba, T.T. and Ivetić, Tamara B. and Stamenović, B. and Labus, Nebojša J. and Jović, M. and Ristic, M. M.",
year = "2009",
abstract = "Far infrared reflectivity spectra of sintered Pb0.9Sn0.1Te doped with 0.2 and 2 at.% Pd are measured. The experimental results are analyzed using a fitting procedure based on a modified plasmon-phonon interaction model. The values of calculated parameters are compared with literature data for PbTe and PbSnTe single crystal samples doped with palladium and nickel, with the purpose of determining whether the sintered samples can be used in different devices instead of single crystals.",
publisher = "Springer, New York",
journal = "Powder Metallurgy and Metal Ceramics",
title = "Far infrared properties of sintered Pb0.9Sn0.1Te doped with palladium",
pages = "357-353",
number = "5-6",
volume = "48",
doi = "10.1007/s11106-009-9122-y"
}

Nikolić, P. M., Paraskevopoulos, K.M., Nikolić, M. V., Vujatović, S. S., Pavlidou, E., Zorba, T.T., Ivetić, T. B., Stamenović, B., Labus, N. J., Jović, M.,& Ristic, M. M.. (2009). Far infrared properties of sintered Pb0.9Sn0.1Te doped with palladium. in Powder Metallurgy and Metal Ceramics
Springer, New York., 48(5-6), 353-357.
https://doi.org/10.1007/s11106-009-9122-y

Nikolić PM, Paraskevopoulos K, Nikolić MV, Vujatović SS, Pavlidou E, Zorba T, Ivetić TB, Stamenović B, Labus NJ, Jović M, Ristic MM. Far infrared properties of sintered Pb0.9Sn0.1Te doped with palladium. in Powder Metallurgy and Metal Ceramics. 2009;48(5-6):353-357.
doi:10.1007/s11106-009-9122-y .

Nikolić, Pantelija M., Paraskevopoulos, K.M., Nikolić, Maria Vesna, Vujatović, Stevan S, Pavlidou, E., Zorba, T.T., Ivetić, Tamara B., Stamenović, B., Labus, Nebojša J., Jović, M., Ristic, M. M., "Far infrared properties of sintered Pb0.9Sn0.1Te doped with palladium" in Powder Metallurgy and Metal Ceramics, 48, no. 5-6 (2009):353-357,
https://doi.org/10.1007/s11106-009-9122-y . .

TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Paraskevopoulos, K.M.
AU  - Vujatović, Stevan S
AU  - Nikolić, Maria Vesna
AU  - Chatzistavrou, X.
AU  - Pavlidou, E.
AU  - Ivetić, Tamara B.
AU  - Blagojević, V.
AU  - Bojicic, Aleksandar
AU  - Dinulović, D.
PY  - 2009
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/339
AB  - Single crystal samples of PbTe and PbSnTe doped with Cr were made using the Bridgman technique. Far infrared diagrams of PbTe samples doped with 0.4 at.%, 0.8 at.% and 1 at.% Cr and also of Pb(0.9)Sn(0.1)Te doped with 0.4 at.%, 0.7 at.% and 1.1 at.% Cr are presented and numerically analyzed. Local modes were determined at about 260 cm(-1) and 480 cm(-1) for PbTe doped with Cr and at slightly higher frequencies for PbSnTe doped with Cr. The origin of the local modes was discused about the possible application of the PbSnTe + Cr alloys.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Optical properties of PbTe and PbSnTe doped with Cr
EP  - 896
IS  - 2
SP  - 893
VL  - 480
DO  - 10.1016/j.jallcom.2009.02.067
ER  - 

@article{
author = "Nikolić, Pantelija M. and Paraskevopoulos, K.M. and Vujatović, Stevan S and Nikolić, Maria Vesna and Chatzistavrou, X. and Pavlidou, E. and Ivetić, Tamara B. and Blagojević, V. and Bojicic, Aleksandar and Dinulović, D.",
year = "2009",
abstract = "Single crystal samples of PbTe and PbSnTe doped with Cr were made using the Bridgman technique. Far infrared diagrams of PbTe samples doped with 0.4 at.%, 0.8 at.% and 1 at.% Cr and also of Pb(0.9)Sn(0.1)Te doped with 0.4 at.%, 0.7 at.% and 1.1 at.% Cr are presented and numerically analyzed. Local modes were determined at about 260 cm(-1) and 480 cm(-1) for PbTe doped with Cr and at slightly higher frequencies for PbSnTe doped with Cr. The origin of the local modes was discused about the possible application of the PbSnTe + Cr alloys.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Optical properties of PbTe and PbSnTe doped with Cr",
pages = "896-893",
number = "2",
volume = "480",
doi = "10.1016/j.jallcom.2009.02.067"
}

Nikolić, P. M., Paraskevopoulos, K.M., Vujatović, S. S., Nikolić, M. V., Chatzistavrou, X., Pavlidou, E., Ivetić, T. B., Blagojević, V., Bojicic, A.,& Dinulović, D.. (2009). Optical properties of PbTe and PbSnTe doped with Cr. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 480(2), 893-896.
https://doi.org/10.1016/j.jallcom.2009.02.067

Nikolić PM, Paraskevopoulos K, Vujatović SS, Nikolić MV, Chatzistavrou X, Pavlidou E, Ivetić TB, Blagojević V, Bojicic A, Dinulović D. Optical properties of PbTe and PbSnTe doped with Cr. in Journal of Alloys and Compounds. 2009;480(2):893-896.
doi:10.1016/j.jallcom.2009.02.067 .

Nikolić, Pantelija M., Paraskevopoulos, K.M., Vujatović, Stevan S, Nikolić, Maria Vesna, Chatzistavrou, X., Pavlidou, E., Ivetić, Tamara B., Blagojević, V., Bojicic, Aleksandar, Dinulović, D., "Optical properties of PbTe and PbSnTe doped with Cr" in Journal of Alloys and Compounds, 480, no. 2 (2009):893-896,
https://doi.org/10.1016/j.jallcom.2009.02.067 . .

TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Paraskevopoulos, K.M.
AU  - Nikolić, Maria Vesna
AU  - Stamenović, B.
AU  - Zorba, T.T.
AU  - Vujatović, Stevan S
AU  - Blagojević, V.
AU  - Bojicic, Aleksandar
PY  - 2009
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/323
AB  - Single crystal samples of Pb0.9Sn0.1Te doped with Yb, Sm or Gd were produced using the Bridgman method. Far infrared reflectivity spectra were measured at room temperature for highly polished samples with various impurity concentration (between 0.2 at% and 1 at%). The experimental diagrams were numerically analyzed using a fitting procedure based on the plasma-phonon interaction model and the optical parameters were determined. The application of lead-tin tellurides doped with rare earth elements for infrared astronomy has been discussed.
PB  - National Institute of Optoelectronics
T2  - Journal of Optoelectronics and Advanced Materials
T1  - Far infrared study of some rare earth impurities crystals of Pb1-xSnx alloys
EP  - 460
IS  - 4
SP  - 457
VL  - 11
UR  - https://hdl.handle.net/21.15107/rcub_dais_3470
ER  - 

@article{
author = "Nikolić, Pantelija M. and Paraskevopoulos, K.M. and Nikolić, Maria Vesna and Stamenović, B. and Zorba, T.T. and Vujatović, Stevan S and Blagojević, V. and Bojicic, Aleksandar",
year = "2009",
abstract = "Single crystal samples of Pb0.9Sn0.1Te doped with Yb, Sm or Gd were produced using the Bridgman method. Far infrared reflectivity spectra were measured at room temperature for highly polished samples with various impurity concentration (between 0.2 at% and 1 at%). The experimental diagrams were numerically analyzed using a fitting procedure based on the plasma-phonon interaction model and the optical parameters were determined. The application of lead-tin tellurides doped with rare earth elements for infrared astronomy has been discussed.",
publisher = "National Institute of Optoelectronics",
journal = "Journal of Optoelectronics and Advanced Materials",
title = "Far infrared study of some rare earth impurities crystals of Pb1-xSnx alloys",
pages = "460-457",
number = "4",
volume = "11",
url = "https://hdl.handle.net/21.15107/rcub_dais_3470"
}

Nikolić, P. M., Paraskevopoulos, K.M., Nikolić, M. V., Stamenović, B., Zorba, T.T., Vujatović, S. S., Blagojević, V.,& Bojicic, A.. (2009). Far infrared study of some rare earth impurities crystals of Pb1-xSnx alloys. in Journal of Optoelectronics and Advanced Materials
National Institute of Optoelectronics., 11(4), 457-460.
https://hdl.handle.net/21.15107/rcub_dais_3470

Nikolić PM, Paraskevopoulos K, Nikolić MV, Stamenović B, Zorba T, Vujatović SS, Blagojević V, Bojicic A. Far infrared study of some rare earth impurities crystals of Pb1-xSnx alloys. in Journal of Optoelectronics and Advanced Materials. 2009;11(4):457-460.
https://hdl.handle.net/21.15107/rcub_dais_3470 .

Nikolić, Pantelija M., Paraskevopoulos, K.M., Nikolić, Maria Vesna, Stamenović, B., Zorba, T.T., Vujatović, Stevan S, Blagojević, V., Bojicic, Aleksandar, "Far infrared study of some rare earth impurities crystals of Pb1-xSnx alloys" in Journal of Optoelectronics and Advanced Materials, 11, no. 4 (2009):457-460,
https://hdl.handle.net/21.15107/rcub_dais_3470 .

TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Vujatović, Stevan S.
AU  - Luković Golić, Danijela
AU  - Labus, Nebojša J.
AU  - Paraskevopoulos, K.M.
AU  - Zorbas, Kostas T.
AU  - Nikolić, Maria Vesna
AU  - Bojicic, Aleksandar
AU  - Blagojević, Vladimir
AU  - Koenig, Wolfgang
PY  - 2008
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/300
AB  - Far infrared reflectivity spectra of single crystal Pb0.85Sn0.15Te doped with Ni were measured in the temperature range between 10 K and 300 K. Analysis of the experimental spectra was made using a fitting procedure based on the modified model of plasmon-phonon interactions and the optical parameters were calculated. Two local modes were observed and their origin was discussed.
PB  - Carl Hanser Verlag, Munich
T2  - International Journal of Materials Research
T1  - Far infrared spectroscopy of Pb0.85Sn0.15Te alloy doped with Ni
EP  - 1396
IS  - 12
SP  - 1393
VL  - 99
DO  - 10.3139/146.101772
ER  - 

@article{
author = "Nikolić, Pantelija M. and Vujatović, Stevan S. and Luković Golić, Danijela and Labus, Nebojša J. and Paraskevopoulos, K.M. and Zorbas, Kostas T. and Nikolić, Maria Vesna and Bojicic, Aleksandar and Blagojević, Vladimir and Koenig, Wolfgang",
year = "2008",
abstract = "Far infrared reflectivity spectra of single crystal Pb0.85Sn0.15Te doped with Ni were measured in the temperature range between 10 K and 300 K. Analysis of the experimental spectra was made using a fitting procedure based on the modified model of plasmon-phonon interactions and the optical parameters were calculated. Two local modes were observed and their origin was discussed.",
publisher = "Carl Hanser Verlag, Munich",
journal = "International Journal of Materials Research",
title = "Far infrared spectroscopy of Pb0.85Sn0.15Te alloy doped with Ni",
pages = "1396-1393",
number = "12",
volume = "99",
doi = "10.3139/146.101772"
}

Nikolić, P. M., Vujatović, S. S., Luković Golić, D., Labus, N. J., Paraskevopoulos, K.M., Zorbas, K. T., Nikolić, M. V., Bojicic, A., Blagojević, V.,& Koenig, W.. (2008). Far infrared spectroscopy of Pb0.85Sn0.15Te alloy doped with Ni. in International Journal of Materials Research
Carl Hanser Verlag, Munich., 99(12), 1393-1396.
https://doi.org/10.3139/146.101772

Nikolić PM, Vujatović SS, Luković Golić D, Labus NJ, Paraskevopoulos K, Zorbas KT, Nikolić MV, Bojicic A, Blagojević V, Koenig W. Far infrared spectroscopy of Pb0.85Sn0.15Te alloy doped with Ni. in International Journal of Materials Research. 2008;99(12):1393-1396.
doi:10.3139/146.101772 .

Nikolić, Pantelija M., Vujatović, Stevan S., Luković Golić, Danijela, Labus, Nebojša J., Paraskevopoulos, K.M., Zorbas, Kostas T., Nikolić, Maria Vesna, Bojicic, Aleksandar, Blagojević, Vladimir, Koenig, Wolfgang, "Far infrared spectroscopy of Pb0.85Sn0.15Te alloy doped with Ni" in International Journal of Materials Research, 99, no. 12 (2008):1393-1396,
https://doi.org/10.3139/146.101772 . .

TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Luković Golić, Danijela
AU  - Vujatović, Stevan S
AU  - Paraskevopoulos, K.M.
AU  - Nikolić, Maria Vesna
AU  - Blagojević, V.
AU  - Zorba, T.T.
AU  - Stamenović, B.
AU  - Koenig, W.
PY  - 2008
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/267
AB  - Single crystal samples of lead-telluride doped with Ytterbium were made using the Bridgman method. Far infrared reflectivity spectra in the temperature range from 10 to 300 K were measured. Analysis of the experimental spectra was made using a fitting procedure based on the model of plasma-phonon interactions and the optical parameters were calculated. Two local impurity modes of Ytterbium were observed at about 160 and 250 cm(-1).
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Far infrared reflectivity spectra of lead-telluride doped with Ytterbium
EP  - 322
IS  - 1-2
SP  - 319
VL  - 466
DO  - 10.1016/j.jallcom.2007.11.076
ER  - 

@article{
author = "Nikolić, Pantelija M. and Luković Golić, Danijela and Vujatović, Stevan S and Paraskevopoulos, K.M. and Nikolić, Maria Vesna and Blagojević, V. and Zorba, T.T. and Stamenović, B. and Koenig, W.",
year = "2008",
abstract = "Single crystal samples of lead-telluride doped with Ytterbium were made using the Bridgman method. Far infrared reflectivity spectra in the temperature range from 10 to 300 K were measured. Analysis of the experimental spectra was made using a fitting procedure based on the model of plasma-phonon interactions and the optical parameters were calculated. Two local impurity modes of Ytterbium were observed at about 160 and 250 cm(-1).",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Far infrared reflectivity spectra of lead-telluride doped with Ytterbium",
pages = "322-319",
number = "1-2",
volume = "466",
doi = "10.1016/j.jallcom.2007.11.076"
}

Nikolić, P. M., Luković Golić, D., Vujatović, S. S., Paraskevopoulos, K.M., Nikolić, M. V., Blagojević, V., Zorba, T.T., Stamenović, B.,& Koenig, W.. (2008). Far infrared reflectivity spectra of lead-telluride doped with Ytterbium. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 466(1-2), 319-322.
https://doi.org/10.1016/j.jallcom.2007.11.076

Nikolić PM, Luković Golić D, Vujatović SS, Paraskevopoulos K, Nikolić MV, Blagojević V, Zorba T, Stamenović B, Koenig W. Far infrared reflectivity spectra of lead-telluride doped with Ytterbium. in Journal of Alloys and Compounds. 2008;466(1-2):319-322.
doi:10.1016/j.jallcom.2007.11.076 .

Nikolić, Pantelija M., Luković Golić, Danijela, Vujatović, Stevan S, Paraskevopoulos, K.M., Nikolić, Maria Vesna, Blagojević, V., Zorba, T.T., Stamenović, B., Koenig, W., "Far infrared reflectivity spectra of lead-telluride doped with Ytterbium" in Journal of Alloys and Compounds, 466, no. 1-2 (2008):319-322,
https://doi.org/10.1016/j.jallcom.2007.11.076 . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Obradović, Nina
AU  - Paraskevopoulos, K.M.
AU  - Zorba, T.T.
AU  - Savić, Slavica M.
AU  - Ristic, M. M.
PY  - 2008
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/249
AB  - Zinc-titanate ceramics were obtained by initial mechanical activation in a high-energy planetary mill for 15 min followed by sintering at temperatures 900-1100 degrees C for 2 h. Room temperature far infrared reflectivity spectra for all samples were measured in the range 1001200 cm(-1). The same ionic oscillators were present in the measured spectra, but their intensities increased with the sintering temperature in correlation with the increase in sample density and microstructure changes. Optical parameters were determined for seven oscillators belonging to the spinel structure using the four-parameter model of coupled oscillators. Born effective charges were calculated from the transversal/longitudinal splitting.
PB  - Springer, New York
T2  - Journal of Materials Science
T1  - Far infrared reflectance of sintered Zn2TiO4
EP  - 5568
IS  - 16
SP  - 5564
VL  - 43
DO  - 10.1007/s10853-008-2819-3
ER  - 

@article{
author = "Nikolić, Maria Vesna and Obradović, Nina and Paraskevopoulos, K.M. and Zorba, T.T. and Savić, Slavica M. and Ristic, M. M.",
year = "2008",
abstract = "Zinc-titanate ceramics were obtained by initial mechanical activation in a high-energy planetary mill for 15 min followed by sintering at temperatures 900-1100 degrees C for 2 h. Room temperature far infrared reflectivity spectra for all samples were measured in the range 1001200 cm(-1). The same ionic oscillators were present in the measured spectra, but their intensities increased with the sintering temperature in correlation with the increase in sample density and microstructure changes. Optical parameters were determined for seven oscillators belonging to the spinel structure using the four-parameter model of coupled oscillators. Born effective charges were calculated from the transversal/longitudinal splitting.",
publisher = "Springer, New York",
journal = "Journal of Materials Science",
title = "Far infrared reflectance of sintered Zn2TiO4",
pages = "5568-5564",
number = "16",
volume = "43",
doi = "10.1007/s10853-008-2819-3"
}

Nikolić, M. V., Obradović, N., Paraskevopoulos, K.M., Zorba, T.T., Savić, S. M.,& Ristic, M. M.. (2008). Far infrared reflectance of sintered Zn2TiO4. in Journal of Materials Science
Springer, New York., 43(16), 5564-5568.
https://doi.org/10.1007/s10853-008-2819-3

Nikolić MV, Obradović N, Paraskevopoulos K, Zorba T, Savić SM, Ristic MM. Far infrared reflectance of sintered Zn2TiO4. in Journal of Materials Science. 2008;43(16):5564-5568.
doi:10.1007/s10853-008-2819-3 .

Nikolić, Maria Vesna, Obradović, Nina, Paraskevopoulos, K.M., Zorba, T.T., Savić, Slavica M., Ristic, M. M., "Far infrared reflectance of sintered Zn2TiO4" in Journal of Materials Science, 43, no. 16 (2008):5564-5568,
https://doi.org/10.1007/s10853-008-2819-3 . .

TY  - CONF
AU  - Ivetić, Tamara B.
AU  - Nikolić, Maria Vesna
AU  - Paraskevopoulos, K.M.
AU  - Blagojević, V.
AU  - Nikolić, Pantelija M.
AU  - Ristić, M.M.
PY  - 2008
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/275
AB  - ZnO-SnO2 ceramics were prepared with a traditional powder mixed oxide route by mixing starting powders of ZnO and SnO2 in the molar ratio 2:1 and adding small amounts (0.5; 1.0; and 1.5 molar%) of Bi 2O3. These mixtures were then mechanically activated for 10 minutes in a planetary ball mill, uniaxially pressed and sintered at 1300°C for 2h. The phase composition of the sintered samples was determined with X-ray Diffraction (XRD) analysis and a detailed Rietveld analysis was performed. Room temperature far infrared reflectivity diagrams were obtained using Bruker 113V FTIR spectrometer and fitted with several theoretical models in other to determine parameter values for some structural and optical properties of the obtained material.
C3  - A Global Road Map for Ceramic Materials and Technologies: Forecasting the Future of Ceramics, Intern
T1  - A detailed XRD and FTIR analysis of Bi2O3 doped ZnO-SnO2 ceramics
SP  - 6
UR  - https://hdl.handle.net/21.15107/rcub_dais_3565
ER  - 

@conference{
author = "Ivetić, Tamara B. and Nikolić, Maria Vesna and Paraskevopoulos, K.M. and Blagojević, V. and Nikolić, Pantelija M. and Ristić, M.M.",
year = "2008",
abstract = "ZnO-SnO2 ceramics were prepared with a traditional powder mixed oxide route by mixing starting powders of ZnO and SnO2 in the molar ratio 2:1 and adding small amounts (0.5; 1.0; and 1.5 molar%) of Bi 2O3. These mixtures were then mechanically activated for 10 minutes in a planetary ball mill, uniaxially pressed and sintered at 1300°C for 2h. The phase composition of the sintered samples was determined with X-ray Diffraction (XRD) analysis and a detailed Rietveld analysis was performed. Room temperature far infrared reflectivity diagrams were obtained using Bruker 113V FTIR spectrometer and fitted with several theoretical models in other to determine parameter values for some structural and optical properties of the obtained material.",
journal = "A Global Road Map for Ceramic Materials and Technologies: Forecasting the Future of Ceramics, Intern",
title = "A detailed XRD and FTIR analysis of Bi2O3 doped ZnO-SnO2 ceramics",
pages = "6",
url = "https://hdl.handle.net/21.15107/rcub_dais_3565"
}

Ivetić, T. B., Nikolić, M. V., Paraskevopoulos, K.M., Blagojević, V., Nikolić, P. M.,& Ristić, M.M.. (2008). A detailed XRD and FTIR analysis of Bi2O3 doped ZnO-SnO2 ceramics. in A Global Road Map for Ceramic Materials and Technologies: Forecasting the Future of Ceramics, Intern, 6.
https://hdl.handle.net/21.15107/rcub_dais_3565

Ivetić TB, Nikolić MV, Paraskevopoulos K, Blagojević V, Nikolić PM, Ristić M. A detailed XRD and FTIR analysis of Bi2O3 doped ZnO-SnO2 ceramics. in A Global Road Map for Ceramic Materials and Technologies: Forecasting the Future of Ceramics, Intern. 2008;:6.
https://hdl.handle.net/21.15107/rcub_dais_3565 .

Ivetić, Tamara B., Nikolić, Maria Vesna, Paraskevopoulos, K.M., Blagojević, V., Nikolić, Pantelija M., Ristić, M.M., "A detailed XRD and FTIR analysis of Bi2O3 doped ZnO-SnO2 ceramics" in A Global Road Map for Ceramic Materials and Technologies: Forecasting the Future of Ceramics, Intern (2008):6,
https://hdl.handle.net/21.15107/rcub_dais_3565 .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Satoh, K.
AU  - Ivetić, Tamara B.
AU  - Paraskevopoulos, K.M.
AU  - Zorba, T.T.
AU  - Blagojević, V.
AU  - Mančić, Lidija T
AU  - Nikolić, Pantelija M.
PY  - 2008
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/251
AB  - Single-phase zinc-stannate thin films of different thickness values were prepared by radio frequency magnetron sputtering on a silica substrate. Rietveld analysis of X-ray diffraction data confirmed that the films had an inverse spinel structure, with a cation inversion parameter of 0.8. Room temperature far and mid infrared reflectivity spectra were measured in the range 50-4000 cm(-1). The reflectivity diagrams were analyzed using the four-parameter model of coupled oscillators for optical phonons with a standard multi-layer technique taking into account the thin-film layer and the substrate. The optical parameters were determined for seven oscillators belonging to the spinel structure. Their origin was discussed in relation to non-stoichiometry of the thin film and cation disorder in the crystal lattice. Bom effective charges were calculated from the transversal/ longitudinal splitting.
PB  - Elsevier Science Sa, Lausanne
T2  - Thin Solid Films
T1  - Infrared reflection spectroscopy of Zn2SnO4 thin films deposited on silica substrate by radio frequency magnetron sputtering
EP  - 6299
IS  - 18
SP  - 6293
VL  - 516
DO  - 10.1016/j.tsf.2007.12.118
ER  - 

@article{
author = "Nikolić, Maria Vesna and Satoh, K. and Ivetić, Tamara B. and Paraskevopoulos, K.M. and Zorba, T.T. and Blagojević, V. and Mančić, Lidija T and Nikolić, Pantelija M.",
year = "2008",
abstract = "Single-phase zinc-stannate thin films of different thickness values were prepared by radio frequency magnetron sputtering on a silica substrate. Rietveld analysis of X-ray diffraction data confirmed that the films had an inverse spinel structure, with a cation inversion parameter of 0.8. Room temperature far and mid infrared reflectivity spectra were measured in the range 50-4000 cm(-1). The reflectivity diagrams were analyzed using the four-parameter model of coupled oscillators for optical phonons with a standard multi-layer technique taking into account the thin-film layer and the substrate. The optical parameters were determined for seven oscillators belonging to the spinel structure. Their origin was discussed in relation to non-stoichiometry of the thin film and cation disorder in the crystal lattice. Bom effective charges were calculated from the transversal/ longitudinal splitting.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Thin Solid Films",
title = "Infrared reflection spectroscopy of Zn2SnO4 thin films deposited on silica substrate by radio frequency magnetron sputtering",
pages = "6299-6293",
number = "18",
volume = "516",
doi = "10.1016/j.tsf.2007.12.118"
}

Nikolić, M. V., Satoh, K., Ivetić, T. B., Paraskevopoulos, K.M., Zorba, T.T., Blagojević, V., Mančić, L. T.,& Nikolić, P. M.. (2008). Infrared reflection spectroscopy of Zn2SnO4 thin films deposited on silica substrate by radio frequency magnetron sputtering. in Thin Solid Films
Elsevier Science Sa, Lausanne., 516(18), 6293-6299.
https://doi.org/10.1016/j.tsf.2007.12.118

Nikolić MV, Satoh K, Ivetić TB, Paraskevopoulos K, Zorba T, Blagojević V, Mančić LT, Nikolić PM. Infrared reflection spectroscopy of Zn2SnO4 thin films deposited on silica substrate by radio frequency magnetron sputtering. in Thin Solid Films. 2008;516(18):6293-6299.
doi:10.1016/j.tsf.2007.12.118 .

Nikolić, Maria Vesna, Satoh, K., Ivetić, Tamara B., Paraskevopoulos, K.M., Zorba, T.T., Blagojević, V., Mančić, Lidija T, Nikolić, Pantelija M., "Infrared reflection spectroscopy of Zn2SnO4 thin films deposited on silica substrate by radio frequency magnetron sputtering" in Thin Solid Films, 516, no. 18 (2008):6293-6299,
https://doi.org/10.1016/j.tsf.2007.12.118 . .

TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Paraskevopoulos, K.M.
AU  - Vujatović, Stevan S
AU  - Bojicic, Aleksandar
AU  - Zorba, T.T.
AU  - Nikolić, Maria Vesna
AU  - Stamenović, B.
AU  - Ivetić, Tamara B.
AU  - Blagojević, V.
PY  - 2008
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/250
AB  - Far infrared reflectivity spectra of single crystal PbTe doped with Bi were measured and numerically analyzed using a fitting procedure based on a modified plasmon-phonon interaction model with two additional oscillators at about 140 and 219 cm(-1) which represents local Bi impurity modes. The position of observed plasma minimum and the values of the calculated parameters were compared with the literature data for pure single crystal PbTe which shows that bismuth improved the basic properties of the host crystal a lot.
PB  - Springer, New York
T2  - Journal of Materials Science
T1  - Far infrared properties of PbTe doped with Bismuth
EP  - 5520
IS  - 16
SP  - 5516
VL  - 43
DO  - 10.1007/s10853-008-2821-9
ER  - 

@article{
author = "Nikolić, Pantelija M. and Paraskevopoulos, K.M. and Vujatović, Stevan S and Bojicic, Aleksandar and Zorba, T.T. and Nikolić, Maria Vesna and Stamenović, B. and Ivetić, Tamara B. and Blagojević, V.",
year = "2008",
abstract = "Far infrared reflectivity spectra of single crystal PbTe doped with Bi were measured and numerically analyzed using a fitting procedure based on a modified plasmon-phonon interaction model with two additional oscillators at about 140 and 219 cm(-1) which represents local Bi impurity modes. The position of observed plasma minimum and the values of the calculated parameters were compared with the literature data for pure single crystal PbTe which shows that bismuth improved the basic properties of the host crystal a lot.",
publisher = "Springer, New York",
journal = "Journal of Materials Science",
title = "Far infrared properties of PbTe doped with Bismuth",
pages = "5520-5516",
number = "16",
volume = "43",
doi = "10.1007/s10853-008-2821-9"
}

Nikolić, P. M., Paraskevopoulos, K.M., Vujatović, S. S., Bojicic, A., Zorba, T.T., Nikolić, M. V., Stamenović, B., Ivetić, T. B.,& Blagojević, V.. (2008). Far infrared properties of PbTe doped with Bismuth. in Journal of Materials Science
Springer, New York., 43(16), 5516-5520.
https://doi.org/10.1007/s10853-008-2821-9

Nikolić PM, Paraskevopoulos K, Vujatović SS, Bojicic A, Zorba T, Nikolić MV, Stamenović B, Ivetić TB, Blagojević V. Far infrared properties of PbTe doped with Bismuth. in Journal of Materials Science. 2008;43(16):5516-5520.
doi:10.1007/s10853-008-2821-9 .

Nikolić, Pantelija M., Paraskevopoulos, K.M., Vujatović, Stevan S, Bojicic, Aleksandar, Zorba, T.T., Nikolić, Maria Vesna, Stamenović, B., Ivetić, Tamara B., Blagojević, V., "Far infrared properties of PbTe doped with Bismuth" in Journal of Materials Science, 43, no. 16 (2008):5516-5520,
https://doi.org/10.1007/s10853-008-2821-9 . .

TY  - JOUR
AU  - Ivetić, Tamara B.
AU  - Nikolić, Maria Vesna
AU  - Paraskevopoulos, K.M.
AU  - Pavlidou, E.
AU  - Zorba, T.T.
AU  - Nikolić, Pantelija M.
AU  - Ristic, M. M.
PY  - 2008
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/246
AB  - The effects of Bi2O3 addition on the phase composition, microstructure and optical properties of ZnO-SnO2 ceramics were investigated. Starting powders of ZnO and SnO2 were mixed in the molar ratio 2:1. After adding Bi2O3 (1.0 mol.%) this mixture was mechanically activated for 10 min in a planetary ball mill, uniaxially pressed and sintered at 1300 degrees C for 2 h. Far-infrared reflection spectra were measured (100-1000 cm(-1)). To investigate the occurred differences in FTIR spectra, the Bi2O3-doped sample was examined more carefully with a Perkin-Elmer FTIR spectrometer (Perkin Elmer, Waltham, MA, USA) connected with a Perkin-Elmer FTIR microscope and itemized points of interest were also studied with SEM-EDS.
PB  - Wiley, Hoboken
T2  - Journal of Microscopy
T1  - Combined FTIR and SEM-EDS study of Bi2O3 doped ZnO-SnO2 ceramics
EP  - 503
IS  - 3
SP  - 498
VL  - 232
DO  - 10.1111/j.1365-2818.2008.02147.x
ER  - 

@article{
author = "Ivetić, Tamara B. and Nikolić, Maria Vesna and Paraskevopoulos, K.M. and Pavlidou, E. and Zorba, T.T. and Nikolić, Pantelija M. and Ristic, M. M.",
year = "2008",
abstract = "The effects of Bi2O3 addition on the phase composition, microstructure and optical properties of ZnO-SnO2 ceramics were investigated. Starting powders of ZnO and SnO2 were mixed in the molar ratio 2:1. After adding Bi2O3 (1.0 mol.%) this mixture was mechanically activated for 10 min in a planetary ball mill, uniaxially pressed and sintered at 1300 degrees C for 2 h. Far-infrared reflection spectra were measured (100-1000 cm(-1)). To investigate the occurred differences in FTIR spectra, the Bi2O3-doped sample was examined more carefully with a Perkin-Elmer FTIR spectrometer (Perkin Elmer, Waltham, MA, USA) connected with a Perkin-Elmer FTIR microscope and itemized points of interest were also studied with SEM-EDS.",
publisher = "Wiley, Hoboken",
journal = "Journal of Microscopy",
title = "Combined FTIR and SEM-EDS study of Bi2O3 doped ZnO-SnO2 ceramics",
pages = "503-498",
number = "3",
volume = "232",
doi = "10.1111/j.1365-2818.2008.02147.x"
}

Ivetić, T. B., Nikolić, M. V., Paraskevopoulos, K.M., Pavlidou, E., Zorba, T.T., Nikolić, P. M.,& Ristic, M. M.. (2008). Combined FTIR and SEM-EDS study of Bi2O3 doped ZnO-SnO2 ceramics. in Journal of Microscopy
Wiley, Hoboken., 232(3), 498-503.
https://doi.org/10.1111/j.1365-2818.2008.02147.x

Ivetić TB, Nikolić MV, Paraskevopoulos K, Pavlidou E, Zorba T, Nikolić PM, Ristic MM. Combined FTIR and SEM-EDS study of Bi2O3 doped ZnO-SnO2 ceramics. in Journal of Microscopy. 2008;232(3):498-503.
doi:10.1111/j.1365-2818.2008.02147.x .

Ivetić, Tamara B., Nikolić, Maria Vesna, Paraskevopoulos, K.M., Pavlidou, E., Zorba, T.T., Nikolić, Pantelija M., Ristic, M. M., "Combined FTIR and SEM-EDS study of Bi2O3 doped ZnO-SnO2 ceramics" in Journal of Microscopy, 232, no. 3 (2008):498-503,
https://doi.org/10.1111/j.1365-2818.2008.02147.x . .

TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Paraskevopoulos, K.M.
AU  - Vujatović, Stevan S
AU  - Nikolić, Maria Vesna
AU  - Bojicic, Aleksandar
AU  - Zorba, T.T.
AU  - Stamenović, B.
AU  - Blagojević, V.
AU  - Jović, M.
AU  - Dasic, M.
AU  - Koenig, W.
PY  - 2008
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/241
AB  - Single crystal samples of lead telluride doped with Gd were grown using the Bridgman method. Far infrared reflectivity spectra in the temperature range from 10 K to 300 K were measured. The experimental diagrams were numerically analyzed using a fitting procedure based on the plasma-phonon interaction model and the optical parameters were determined, while two local modes of gadolinium were observed at about 155cm(-1) and 230cm(-1) at room temperature. The origin of these local vibrational impurity modes was discussed.
PB  - Elsevier Science Sa, Lausanne
T2  - Materials Chemistry and Physics
T1  - Far infrared study of local impurity modes of Gd doped PbTe
EP  - 499
IS  - 2
SP  - 496
VL  - 112
DO  - 10.1016/j.matchemphys.2008.05.083
ER  - 

@article{
author = "Nikolić, Pantelija M. and Paraskevopoulos, K.M. and Vujatović, Stevan S and Nikolić, Maria Vesna and Bojicic, Aleksandar and Zorba, T.T. and Stamenović, B. and Blagojević, V. and Jović, M. and Dasic, M. and Koenig, W.",
year = "2008",
abstract = "Single crystal samples of lead telluride doped with Gd were grown using the Bridgman method. Far infrared reflectivity spectra in the temperature range from 10 K to 300 K were measured. The experimental diagrams were numerically analyzed using a fitting procedure based on the plasma-phonon interaction model and the optical parameters were determined, while two local modes of gadolinium were observed at about 155cm(-1) and 230cm(-1) at room temperature. The origin of these local vibrational impurity modes was discussed.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Materials Chemistry and Physics",
title = "Far infrared study of local impurity modes of Gd doped PbTe",
pages = "499-496",
number = "2",
volume = "112",
doi = "10.1016/j.matchemphys.2008.05.083"
}

Nikolić, P. M., Paraskevopoulos, K.M., Vujatović, S. S., Nikolić, M. V., Bojicic, A., Zorba, T.T., Stamenović, B., Blagojević, V., Jović, M., Dasic, M.,& Koenig, W.. (2008). Far infrared study of local impurity modes of Gd doped PbTe. in Materials Chemistry and Physics
Elsevier Science Sa, Lausanne., 112(2), 496-499.
https://doi.org/10.1016/j.matchemphys.2008.05.083

Nikolić PM, Paraskevopoulos K, Vujatović SS, Nikolić MV, Bojicic A, Zorba T, Stamenović B, Blagojević V, Jović M, Dasic M, Koenig W. Far infrared study of local impurity modes of Gd doped PbTe. in Materials Chemistry and Physics. 2008;112(2):496-499.
doi:10.1016/j.matchemphys.2008.05.083 .

Nikolić, Pantelija M., Paraskevopoulos, K.M., Vujatović, Stevan S, Nikolić, Maria Vesna, Bojicic, Aleksandar, Zorba, T.T., Stamenović, B., Blagojević, V., Jović, M., Dasic, M., Koenig, W., "Far infrared study of local impurity modes of Gd doped PbTe" in Materials Chemistry and Physics, 112, no. 2 (2008):496-499,
https://doi.org/10.1016/j.matchemphys.2008.05.083 . .