TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Vujatović, Stevan S.
AU  - Luković Golić, Danijela
AU  - Labus, Nebojša
AU  - Paraskevopoulos, Konstantinos M.
AU  - Zorbas, Kostas T.
AU  - Nikolić, Maria Vesna
AU  - Bojičić, Aleksandar I.
AU  - Blagojević, Vladimir D.
AU  - König, Wolfgang
PY  - 2008
UR  - https://dais.sanu.ac.rs/123456789/3567
AB  - Far infrared reflectivity spectra of single crystal Pb 0.85Sn0.15Te 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. © Carl Hanser Verlag GmbH & Co. KG.
PB  - Carl Hanser Verlag
T2  - International Journal of Materials Research
T1  - Far infrared spectroscopy of Pb0.85Sn0.15Te alloy doped with Ni
SP  - 1393
EP  - 1396
VL  - 99
IS  - 12
DO  - 10.3139/146.101772
UR  - https://hdl.handle.net/21.15107/rcub_dais_3567
ER  - 

@article{
author = "Nikolić, Pantelija M. and Vujatović, Stevan S. and Luković Golić, Danijela and Labus, Nebojša and Paraskevopoulos, Konstantinos M. and Zorbas, Kostas T. and Nikolić, Maria Vesna and Bojičić, Aleksandar I. and Blagojević, Vladimir D. and König, Wolfgang",
year = "2008",
abstract = "Far infrared reflectivity spectra of single crystal Pb 0.85Sn0.15Te 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. © Carl Hanser Verlag GmbH & Co. KG.",
publisher = "Carl Hanser Verlag",
journal = "International Journal of Materials Research",
title = "Far infrared spectroscopy of Pb0.85Sn0.15Te alloy doped with Ni",
pages = "1393-1396",
volume = "99",
number = "12",
doi = "10.3139/146.101772",
url = "https://hdl.handle.net/21.15107/rcub_dais_3567"
}

Nikolić, P. M., Vujatović, S. S., Luković Golić, D., Labus, N., Paraskevopoulos, K. M., Zorbas, K. T., Nikolić, M. V., Bojičić, A. I., Blagojević, V. D.,& König, W.. (2008). Far infrared spectroscopy of Pb0.85Sn0.15Te alloy doped with Ni. in International Journal of Materials Research
Carl Hanser Verlag., 99(12), 1393-1396.
https://doi.org/10.3139/146.101772
https://hdl.handle.net/21.15107/rcub_dais_3567

Nikolić PM, Vujatović SS, Luković Golić D, Labus N, Paraskevopoulos KM, Zorbas KT, Nikolić MV, Bojičić AI, Blagojević VD, König 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
https://hdl.handle.net/21.15107/rcub_dais_3567 .

Nikolić, Pantelija M., Vujatović, Stevan S., Luković Golić, Danijela, Labus, Nebojša, Paraskevopoulos, Konstantinos M., Zorbas, Kostas T., Nikolić, Maria Vesna, Bojičić, Aleksandar I., Blagojević, Vladimir D., König, 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 .,
https://hdl.handle.net/21.15107/rcub_dais_3567 .

TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Vujatović, Stevan S.
AU  - Luković Golić, Danijela
AU  - Labus, Nebojša
AU  - Paraskevopoulos, Konstantinos M.
AU  - Zorbas, Kostas T.
AU  - Nikolić, Maria Vesna
AU  - Bojičić, Aleksandar I.
AU  - Blagojević, Vladimir D.
AU  - König, Wolfgang
PY  - 2008
UR  - https://dais.sanu.ac.rs/123456789/3560
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
T2  - Zeitschrift fuer Metallkunde / Materials Research and Advanced Techniques
T1  - Far infrared spectroscopy of Pb0.85Sn0.15Te alloy doped with Ni
SP  - 1393
EP  - 1396
VL  - 99
IS  - 12
DO  - 10.3139/146.101772
UR  - https://hdl.handle.net/21.15107/rcub_dais_3560
ER  - 

@article{
author = "Nikolić, Pantelija M. and Vujatović, Stevan S. and Luković Golić, Danijela and Labus, Nebojša and Paraskevopoulos, Konstantinos M. and Zorbas, Kostas T. and Nikolić, Maria Vesna and Bojičić, Aleksandar I. and Blagojević, Vladimir D. and König, 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",
journal = "Zeitschrift fuer Metallkunde / Materials Research and Advanced Techniques",
title = "Far infrared spectroscopy of Pb0.85Sn0.15Te alloy doped with Ni",
pages = "1393-1396",
volume = "99",
number = "12",
doi = "10.3139/146.101772",
url = "https://hdl.handle.net/21.15107/rcub_dais_3560"
}

Nikolić, P. M., Vujatović, S. S., Luković Golić, D., Labus, N., Paraskevopoulos, K. M., Zorbas, K. T., Nikolić, M. V., Bojičić, A. I., Blagojević, V. D.,& König, W.. (2008). Far infrared spectroscopy of Pb0.85Sn0.15Te alloy doped with Ni. in Zeitschrift fuer Metallkunde / Materials Research and Advanced Techniques
Carl Hanser Verlag., 99(12), 1393-1396.
https://doi.org/10.3139/146.101772
https://hdl.handle.net/21.15107/rcub_dais_3560

Nikolić PM, Vujatović SS, Luković Golić D, Labus N, Paraskevopoulos KM, Zorbas KT, Nikolić MV, Bojičić AI, Blagojević VD, König W. Far infrared spectroscopy of Pb0.85Sn0.15Te alloy doped with Ni. in Zeitschrift fuer Metallkunde / Materials Research and Advanced Techniques. 2008;99(12):1393-1396.
doi:10.3139/146.101772
https://hdl.handle.net/21.15107/rcub_dais_3560 .

Nikolić, Pantelija M., Vujatović, Stevan S., Luković Golić, Danijela, Labus, Nebojša, Paraskevopoulos, Konstantinos M., Zorbas, Kostas T., Nikolić, Maria Vesna, Bojičić, Aleksandar I., Blagojević, Vladimir D., König, Wolfgang, "Far infrared spectroscopy of Pb0.85Sn0.15Te alloy doped with Ni" in Zeitschrift fuer Metallkunde / Materials Research and Advanced Techniques, 99, no. 12 (2008):1393-1396,
https://doi.org/10.3139/146.101772 .,
https://hdl.handle.net/21.15107/rcub_dais_3560 .

TY  - JOUR
AU  - Nikolić, Pantelija
AU  - Vujatović, Stevan
AU  - Paraskevopoulos, Konstantinos M.
AU  - Zorbas, Kostas T.
AU  - Savić, Slavica
AU  - Nikolić, Maria Vesna
AU  - Aleksić, Obrad
AU  - Ristić, Momčilo M.
PY  - 2007
UR  - https://dais.sanu.ac.rs/123456789/15269
AB  - Photoacoustic phase and amplitude spectra of YBa 2 Cu 3 O 7 – δ 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 YBa 2 Cu 3 O 7 – δ 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 YBa 2 Cu 3 O 7 – δ 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.
T2  - International Journal of Materials Research
T1  - Effect of ageing on optical and thermal properties of YBa2Cu3O7–δ
SP  - 569
EP  - 573
VL  - 98
IS  - 7
DO  - 10.3139/146.101511
UR  - https://hdl.handle.net/21.15107/rcub_dais_15269
ER  - 

@article{
author = "Nikolić, Pantelija and Vujatović, Stevan and Paraskevopoulos, Konstantinos M. and Zorbas, Kostas T. and Savić, Slavica and Nikolić, Maria Vesna and Aleksić, Obrad and Ristić, Momčilo M.",
year = "2007",
abstract = "Photoacoustic phase and amplitude spectra of YBa 2 Cu 3 O 7 – δ 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 YBa 2 Cu 3 O 7 – δ 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 YBa 2 Cu 3 O 7 – δ 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.",
journal = "International Journal of Materials Research",
title = "Effect of ageing on optical and thermal properties of YBa2Cu3O7–δ",
pages = "569-573",
volume = "98",
number = "7",
doi = "10.3139/146.101511",
url = "https://hdl.handle.net/21.15107/rcub_dais_15269"
}

Nikolić, P., Vujatović, S., Paraskevopoulos, K. M., Zorbas, K. T., Savić, S., Nikolić, M. V., Aleksić, O.,& Ristić, M. M.. (2007). Effect of ageing on optical and thermal properties of YBa2Cu3O7–δ. in International Journal of Materials Research, 98(7), 569-573.
https://doi.org/10.3139/146.101511
https://hdl.handle.net/21.15107/rcub_dais_15269

Nikolić P, Vujatović S, Paraskevopoulos KM, Zorbas KT, Savić S, Nikolić MV, Aleksić O, Ristić MM. Effect of ageing on optical and thermal properties of YBa2Cu3O7–δ. in International Journal of Materials Research. 2007;98(7):569-573.
doi:10.3139/146.101511
https://hdl.handle.net/21.15107/rcub_dais_15269 .

Nikolić, Pantelija, Vujatović, Stevan, Paraskevopoulos, Konstantinos M., Zorbas, Kostas T., Savić, Slavica, Nikolić, Maria Vesna, Aleksić, Obrad, Ristić, Momčilo M., "Effect of ageing on optical and thermal properties of YBa2Cu3O7–δ" in International Journal of Materials Research, 98, no. 7 (2007):569-573,
https://doi.org/10.3139/146.101511 .,
https://hdl.handle.net/21.15107/rcub_dais_15269 .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Ivetić, Tamara
AU  - Paraskevopoulos, Konstantinos M.
AU  - Zorbas, Kostas T.
AU  - Blagojević, Vladimir D.
AU  - Vasiljević Radović, Dana
PY  - 2007
UR  - https://dais.sanu.ac.rs/123456789/12888
AB  - A mixture of starting ZnO and SnO2 powders (molar ratio 2: 1) were mechanically activated for 10, 40, 80 and 160 min in a planetary ball mill and then isothermally sintered at 1300 degrees C for 2 h in order to obtain Zn2SnO4 ceramics. X-ray diffraction analysis confirmed single-phase polycrystals. Far infrared reflection spectra were measured (100-1400 cm(-1)). The same oscillators were observed, but the highest intensity of reflectivity peaks was obtained for the powder activated 10min and it gradually decreased with longer times of mechanical activation. This is in agreement with microstructure analvsis where longer times of mechanical activation lead to increased porosity and defects. Using group theory six ionic oscillators were calculated for single crystal Zn2SnO4 Spectra, but two more oscillators were observed in the obtained experimental spectra, which Could be the result of mechanical activation and sintering. The FIR experimental results were numerically analyzed and oscillator parameters were calculated.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of the European Ceramic Society
T1  - Far infrared reflection spectroscopy of Zn2SnO4 ceramics obtained by sintering mechanically activated ZnO-SnO2 powder mixtures
SP  - 3727
EP  - 3730
VL  - 27
IS  - 13-15
DO  - 10.1016/j.jeurceramsoc.2007.02.040
UR  - https://hdl.handle.net/21.15107/rcub_dais_12888
ER  - 

@article{
author = "Nikolić, Maria Vesna and Ivetić, Tamara and Paraskevopoulos, Konstantinos M. and Zorbas, Kostas T. and Blagojević, Vladimir D. and Vasiljević Radović, Dana",
year = "2007",
abstract = "A mixture of starting ZnO and SnO2 powders (molar ratio 2: 1) were mechanically activated for 10, 40, 80 and 160 min in a planetary ball mill and then isothermally sintered at 1300 degrees C for 2 h in order to obtain Zn2SnO4 ceramics. X-ray diffraction analysis confirmed single-phase polycrystals. Far infrared reflection spectra were measured (100-1400 cm(-1)). The same oscillators were observed, but the highest intensity of reflectivity peaks was obtained for the powder activated 10min and it gradually decreased with longer times of mechanical activation. This is in agreement with microstructure analvsis where longer times of mechanical activation lead to increased porosity and defects. Using group theory six ionic oscillators were calculated for single crystal Zn2SnO4 Spectra, but two more oscillators were observed in the obtained experimental spectra, which Could be the result of mechanical activation and sintering. The FIR experimental results were numerically analyzed and oscillator parameters were calculated.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of the European Ceramic Society",
title = "Far infrared reflection spectroscopy of Zn2SnO4 ceramics obtained by sintering mechanically activated ZnO-SnO2 powder mixtures",
pages = "3727-3730",
volume = "27",
number = "13-15",
doi = "10.1016/j.jeurceramsoc.2007.02.040",
url = "https://hdl.handle.net/21.15107/rcub_dais_12888"
}

Nikolić, M. V., Ivetić, T., Paraskevopoulos, K. M., Zorbas, K. T., Blagojević, V. D.,& Vasiljević Radović, D.. (2007). Far infrared reflection spectroscopy of Zn2SnO4 ceramics obtained by sintering mechanically activated ZnO-SnO2 powder mixtures. in Journal of the European Ceramic Society
Elsevier Sci Ltd, Oxford., 27(13-15), 3727-3730.
https://doi.org/10.1016/j.jeurceramsoc.2007.02.040
https://hdl.handle.net/21.15107/rcub_dais_12888

Nikolić MV, Ivetić T, Paraskevopoulos KM, Zorbas KT, Blagojević VD, Vasiljević Radović D. Far infrared reflection spectroscopy of Zn2SnO4 ceramics obtained by sintering mechanically activated ZnO-SnO2 powder mixtures. in Journal of the European Ceramic Society. 2007;27(13-15):3727-3730.
doi:10.1016/j.jeurceramsoc.2007.02.040
https://hdl.handle.net/21.15107/rcub_dais_12888 .

Nikolić, Maria Vesna, Ivetić, Tamara, Paraskevopoulos, Konstantinos M., Zorbas, Kostas T., Blagojević, Vladimir D., Vasiljević Radović, Dana, "Far infrared reflection spectroscopy of Zn2SnO4 ceramics obtained by sintering mechanically activated ZnO-SnO2 powder mixtures" in Journal of the European Ceramic Society, 27, no. 13-15 (2007):3727-3730,
https://doi.org/10.1016/j.jeurceramsoc.2007.02.040 .,
https://hdl.handle.net/21.15107/rcub_dais_12888 .