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  - 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  - 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, Pantelija M.
AU  - Vujatović, Stevan S
AU  - Ivetić, Tamara B.
AU  - Nikolić, Maria Vesna
AU  - Cvetković, Olga G
AU  - Aleksić, Obrad
AU  - Blagojević, Vladimir D
AU  - Branković, Goran
AU  - Nikolić, Nenad
PY  - 2010
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/434
AB  - A single crystal Bi0.9Sb0.1 ingot was synthesized using the Bridgman technique. Thermal diffusivity and electronic transport properties of single crystal cleaved plates (001) were determined from PA photoacoustic phase and amplitude spectra obtained using the photoacoustic method with a transmission detection configuration. Both the PA phase and amplitude were measured versus the modulation frequency and numerically analyzed. EDS analyses done to determine chemical composition of the studied samples as well as to check sample homogeneity. Hall effect measurements data were used for the photoacustic measurements.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Thermal Diffusivity of Single Crystal Bi0.9Sb0.1
EP  - 50
IS  - 1
SP  - 45
VL  - 42
DO  - 10.2298/SOS1001045N
ER  - 

@article{
author = "Nikolić, Pantelija M. and Vujatović, Stevan S and Ivetić, Tamara B. and Nikolić, Maria Vesna and Cvetković, Olga G and Aleksić, Obrad and Blagojević, Vladimir D and Branković, Goran and Nikolić, Nenad",
year = "2010",
abstract = "A single crystal Bi0.9Sb0.1 ingot was synthesized using the Bridgman technique. Thermal diffusivity and electronic transport properties of single crystal cleaved plates (001) were determined from PA photoacoustic phase and amplitude spectra obtained using the photoacoustic method with a transmission detection configuration. Both the PA phase and amplitude were measured versus the modulation frequency and numerically analyzed. EDS analyses done to determine chemical composition of the studied samples as well as to check sample homogeneity. Hall effect measurements data were used for the photoacustic measurements.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Thermal Diffusivity of Single Crystal Bi0.9Sb0.1",
pages = "50-45",
number = "1",
volume = "42",
doi = "10.2298/SOS1001045N"
}

Nikolić, P. M., Vujatović, S. S., Ivetić, T. B., Nikolić, M. V., Cvetković, O. G., Aleksić, O., Blagojević, V. D., Branković, G.,& Nikolić, N.. (2010). Thermal Diffusivity of Single Crystal Bi0.9Sb0.1. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 42(1), 45-50.
https://doi.org/10.2298/SOS1001045N

Nikolić PM, Vujatović SS, Ivetić TB, Nikolić MV, Cvetković OG, Aleksić O, Blagojević VD, Branković G, Nikolić N. Thermal Diffusivity of Single Crystal Bi0.9Sb0.1. in Science of Sintering. 2010;42(1):45-50.
doi:10.2298/SOS1001045N .

Nikolić, Pantelija M., Vujatović, Stevan S, Ivetić, Tamara B., Nikolić, Maria Vesna, Cvetković, Olga G, Aleksić, Obrad, Blagojević, Vladimir D, Branković, Goran, Nikolić, Nenad, "Thermal Diffusivity of Single Crystal Bi0.9Sb0.1" in Science of Sintering, 42, no. 1 (2010):45-50,
https://doi.org/10.2298/SOS1001045N . .

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  - Nikolic, Pantelija
AU  - Koenig, W.
AU  - Vujatović, Stevan S.
AU  - Blagojević, Vladimir D
AU  - Luković Golić, Danijela
AU  - Savić, Slavica M.
AU  - Radulović, K.
AU  - Urosević, D.
AU  - Nikolić, Maria Vesna
PY  - 2007
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/212
AB  - Single crystal samples of lead telluride doped with cerium were made using the Bridgman method. Far infrared reflectivity spectra in the temperature range from 10 to 300K 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 additional local modes were observed at about 138 and 337 cm(-1). The origin of these local vibrational impurity modes was discussed.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Far infrared properties of PbTe doped with cerium
EP  - 295
IS  - 1-2
SP  - 292
VL  - 433
DO  - 10.1016/j.jallcom.2006.06.066
ER  - 

@article{
author = "Nikolic, Pantelija and Koenig, W. and Vujatović, Stevan S. and Blagojević, Vladimir D and Luković Golić, Danijela and Savić, Slavica M. and Radulović, K. and Urosević, D. and Nikolić, Maria Vesna",
year = "2007",
abstract = "Single crystal samples of lead telluride doped with cerium were made using the Bridgman method. Far infrared reflectivity spectra in the temperature range from 10 to 300K 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 additional local modes were observed at about 138 and 337 cm(-1). The origin of these local vibrational impurity modes was discussed.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Far infrared properties of PbTe doped with cerium",
pages = "295-292",
number = "1-2",
volume = "433",
doi = "10.1016/j.jallcom.2006.06.066"
}

Nikolic, P., Koenig, W., Vujatović, S. S., Blagojević, V. D., Luković Golić, D., Savić, S. M., Radulović, K., Urosević, D.,& Nikolić, M. V.. (2007). Far infrared properties of PbTe doped with cerium. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 433(1-2), 292-295.
https://doi.org/10.1016/j.jallcom.2006.06.066

Nikolic P, Koenig W, Vujatović SS, Blagojević VD, Luković Golić D, Savić SM, Radulović K, Urosević D, Nikolić MV. Far infrared properties of PbTe doped with cerium. in Journal of Alloys and Compounds. 2007;433(1-2):292-295.
doi:10.1016/j.jallcom.2006.06.066 .

Nikolic, Pantelija, Koenig, W., Vujatović, Stevan S., Blagojević, Vladimir D, Luković Golić, Danijela, Savić, Slavica M., Radulović, K., Urosević, D., Nikolić, Maria Vesna, "Far infrared properties of PbTe doped with cerium" in Journal of Alloys and Compounds, 433, no. 1-2 (2007):292-295,
https://doi.org/10.1016/j.jallcom.2006.06.066 . .