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  - 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  - Vujatović, Stevan S.
AU  - Paraskevopoulos, K.M.
AU  - Zorbas, Kostas T.
AU  - Savić, Slavica M.
AU  - Nikolić, Maria Vesna
AU  - Aleksić, Obrad
AU  - Ristic, Momcilo M.
PY  - 2007
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/182
AB  - Photoacoustic phase and amplitude spectra of YBa2Cu3O7-delta samples synthesised 18 years ago were measured and numerically analysed. The value of thermal diffusivity obtained on the aged samples was lower than the values obtained for fresh samples. Far infrared spectra of YBa2Cu3O7-delta samples synthesised 18 years ago were recorded and analysed enabling determination of reflectivity peak phonon frequencies present at room temperature. X-ray diffraction analysis and far infrared reflectivity measurements enabled determination of a slight change of the oxygen content with time. The YBa2Cu3O7-delta samples synthesised 18 years ago still remained superconducting, which was confirmed by resistivity measurements of the samples between 50 K and room temperature where the critical temperature was reduced from 93 to 73 K. Atomic force microscopy, scanning electron microscopy and energy dispersive X-ray microanalytical measurements were also performed confirming the composition of the sample.
PB  - Carl Hanser Verlag, Munich
T2  - International Journal of Materials Research
T1  - Effect of ageing on optical and thermal properties of YBa2Cu3O7-delta
EP  - 573
IS  - 7
SP  - 569
VL  - 98
DO  - 10.3139/146.101511
ER  - 

@article{
author = "Nikolić, Pantelija M. and Vujatović, Stevan S. and Paraskevopoulos, K.M. and Zorbas, Kostas T. and Savić, Slavica M. and Nikolić, Maria Vesna and Aleksić, Obrad and Ristic, Momcilo M.",
year = "2007",
abstract = "Photoacoustic phase and amplitude spectra of YBa2Cu3O7-delta samples synthesised 18 years ago were measured and numerically analysed. The value of thermal diffusivity obtained on the aged samples was lower than the values obtained for fresh samples. Far infrared spectra of YBa2Cu3O7-delta samples synthesised 18 years ago were recorded and analysed enabling determination of reflectivity peak phonon frequencies present at room temperature. X-ray diffraction analysis and far infrared reflectivity measurements enabled determination of a slight change of the oxygen content with time. The YBa2Cu3O7-delta samples synthesised 18 years ago still remained superconducting, which was confirmed by resistivity measurements of the samples between 50 K and room temperature where the critical temperature was reduced from 93 to 73 K. Atomic force microscopy, scanning electron microscopy and energy dispersive X-ray microanalytical measurements were also performed confirming the composition of the sample.",
publisher = "Carl Hanser Verlag, Munich",
journal = "International Journal of Materials Research",
title = "Effect of ageing on optical and thermal properties of YBa2Cu3O7-delta",
pages = "573-569",
number = "7",
volume = "98",
doi = "10.3139/146.101511"
}

Nikolić, P. M., Vujatović, S. S., Paraskevopoulos, K.M., Zorbas, K. T., Savić, S. M., Nikolić, M. V., Aleksić, O.,& Ristic, M. M.. (2007). Effect of ageing on optical and thermal properties of YBa2Cu3O7-delta. in International Journal of Materials Research
Carl Hanser Verlag, Munich., 98(7), 569-573.
https://doi.org/10.3139/146.101511

Nikolić PM, Vujatović SS, Paraskevopoulos K, Zorbas KT, Savić SM, Nikolić MV, Aleksić O, Ristic MM. Effect of ageing on optical and thermal properties of YBa2Cu3O7-delta. in International Journal of Materials Research. 2007;98(7):569-573.
doi:10.3139/146.101511 .

Nikolić, Pantelija M., Vujatović, Stevan S., Paraskevopoulos, K.M., Zorbas, Kostas T., Savić, Slavica M., Nikolić, Maria Vesna, Aleksić, Obrad, Ristic, Momcilo M., "Effect of ageing on optical and thermal properties of YBa2Cu3O7-delta" in International Journal of Materials Research, 98, no. 7 (2007):569-573,
https://doi.org/10.3139/146.101511 . .