TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Ivetić, Tamara
AU  - Young, D.L.
AU  - Paraskevopoulos, Konstantinos M.
AU  - Zorba, Triantafyllia T.
AU  - Blagojević, Vladimir
AU  - Nikolić, Pantelija M.
AU  - Vasiljević-Radović, Dana
AU  - Ristić, Momčilo M.
PY  - 2007
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7482
AB  - Room temperature far infrared reflectivity spectra of single phase spinel zinc-stannate thin films, prepared by rf magnetron sputtering on a glass substrate, and bulk sintered samples were measured. The sintered samples were obtained by mechanical activation of starting ZnO and SnO2 powders for 10 min followed by sintering at 1300 °C for 2 h. The reflectivity diagrams obtained for bulk samples were numerically analyzed using the four-parameter model of coupled oscillators. The optical parameters were determined for six observed ionic oscillators belonging to the spinel structure and two additional oscillators originating from the sintering procedure resulting from pores and grain boundaries. The reflectivity diagrams obtained for thin film samples were analyzed using the four-parameter model for optical phonons with a standard optical multi-layer technique.
PB  - Elsevier
T2  - Materials Science and Engineering B-Solid State Materials for Advanced Technology
T1  - Far infrared properties of bulk sintered and thin film Zn2SnO4
VL  - 138
IS  - 1
SP  - 7
EP  - 11
DO  - 10.1016/j.mseb.2006.12.005
ER  - 

@article{
author = "Nikolić, Maria Vesna and Ivetić, Tamara and Young, D.L. and Paraskevopoulos, Konstantinos M. and Zorba, Triantafyllia T. and Blagojević, Vladimir and Nikolić, Pantelija M. and Vasiljević-Radović, Dana and Ristić, Momčilo M.",
year = "2007",
abstract = "Room temperature far infrared reflectivity spectra of single phase spinel zinc-stannate thin films, prepared by rf magnetron sputtering on a glass substrate, and bulk sintered samples were measured. The sintered samples were obtained by mechanical activation of starting ZnO and SnO2 powders for 10 min followed by sintering at 1300 °C for 2 h. The reflectivity diagrams obtained for bulk samples were numerically analyzed using the four-parameter model of coupled oscillators. The optical parameters were determined for six observed ionic oscillators belonging to the spinel structure and two additional oscillators originating from the sintering procedure resulting from pores and grain boundaries. The reflectivity diagrams obtained for thin film samples were analyzed using the four-parameter model for optical phonons with a standard optical multi-layer technique.",
publisher = "Elsevier",
journal = "Materials Science and Engineering B-Solid State Materials for Advanced Technology",
title = "Far infrared properties of bulk sintered and thin film Zn2SnO4",
volume = "138",
number = "1",
pages = "7-11",
doi = "10.1016/j.mseb.2006.12.005"
}

Nikolić, M. V., Ivetić, T., Young, D.L., Paraskevopoulos, K. M., Zorba, T. T., Blagojević, V., Nikolić, P. M., Vasiljević-Radović, D.,& Ristić, M. M.. (2007). Far infrared properties of bulk sintered and thin film Zn2SnO4. in Materials Science and Engineering B-Solid State Materials for Advanced Technology
Elsevier., 138(1), 7-11.
https://doi.org/10.1016/j.mseb.2006.12.005

Nikolić MV, Ivetić T, Young D, Paraskevopoulos KM, Zorba TT, Blagojević V, Nikolić PM, Vasiljević-Radović D, Ristić MM. Far infrared properties of bulk sintered and thin film Zn2SnO4. in Materials Science and Engineering B-Solid State Materials for Advanced Technology. 2007;138(1):7-11.
doi:10.1016/j.mseb.2006.12.005 .

Nikolić, Maria Vesna, Ivetić, Tamara, Young, D.L., Paraskevopoulos, Konstantinos M., Zorba, Triantafyllia T., Blagojević, Vladimir, Nikolić, Pantelija M., Vasiljević-Radović, Dana, Ristić, Momčilo M., "Far infrared properties of bulk sintered and thin film Zn2SnO4" in Materials Science and Engineering B-Solid State Materials for Advanced Technology, 138, no. 1 (2007):7-11,
https://doi.org/10.1016/j.mseb.2006.12.005 . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Nikolić, Pantelija M.
AU  - Blagojević, Vladimir
AU  - Paraskevopoulos, Konstantinos M.
AU  - Zorba, Triantafyllia T.
AU  - Vasiljević-Radović, Dana
AU  - Ristić, Momčilo M.
PY  - 2006
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7485
AB  - Far-infrared reflection spectra of sintered α-MnSe were measured at room temperature. The measured spectrum had one pronounced peak in accordance with literature data and group theory estimation and one smaller peak resulting from the applied sintering procedure. The measured reflection spectrum was analyzed using Kramers–Kronig analysis and a three-component effective medium model based on Bruggeman's theory assuming the presence of a small amount of pores, dominant crystalline grains and intergranular material. In the model the crystalline grains were modeled as a single oscillator appropriate to the single crystal and the intergranular material was also defined as a single ionic oscillator.
PB  - De Gruyter
T2  - International Journal of Materials Research
T1  - Infrared properties of sintered α-MnSe
VL  - 97
IS  - 5
SP  - 666
EP  - 669
DO  - 10.3139/146.101288
ER  - 

@article{
author = "Nikolić, Maria Vesna and Nikolić, Pantelija M. and Blagojević, Vladimir and Paraskevopoulos, Konstantinos M. and Zorba, Triantafyllia T. and Vasiljević-Radović, Dana and Ristić, Momčilo M.",
year = "2006",
abstract = "Far-infrared reflection spectra of sintered α-MnSe were measured at room temperature. The measured spectrum had one pronounced peak in accordance with literature data and group theory estimation and one smaller peak resulting from the applied sintering procedure. The measured reflection spectrum was analyzed using Kramers–Kronig analysis and a three-component effective medium model based on Bruggeman's theory assuming the presence of a small amount of pores, dominant crystalline grains and intergranular material. In the model the crystalline grains were modeled as a single oscillator appropriate to the single crystal and the intergranular material was also defined as a single ionic oscillator.",
publisher = "De Gruyter",
journal = "International Journal of Materials Research",
title = "Infrared properties of sintered α-MnSe",
volume = "97",
number = "5",
pages = "666-669",
doi = "10.3139/146.101288"
}

Nikolić, M. V., Nikolić, P. M., Blagojević, V., Paraskevopoulos, K. M., Zorba, T. T., Vasiljević-Radović, D.,& Ristić, M. M.. (2006). Infrared properties of sintered α-MnSe. in International Journal of Materials Research
De Gruyter., 97(5), 666-669.
https://doi.org/10.3139/146.101288

Nikolić MV, Nikolić PM, Blagojević V, Paraskevopoulos KM, Zorba TT, Vasiljević-Radović D, Ristić MM. Infrared properties of sintered α-MnSe. in International Journal of Materials Research. 2006;97(5):666-669.
doi:10.3139/146.101288 .

Nikolić, Maria Vesna, Nikolić, Pantelija M., Blagojević, Vladimir, Paraskevopoulos, Konstantinos M., Zorba, Triantafyllia T., Vasiljević-Radović, Dana, Ristić, Momčilo M., "Infrared properties of sintered α-MnSe" in International Journal of Materials Research, 97, no. 5 (2006):666-669,
https://doi.org/10.3139/146.101288 . .

TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Vasiljević-Radović, Dana
AU  - Radulović, Katarina
AU  - Đurić, Stevan
AU  - Siapkas, Dimitrios I.
AU  - Zorba, Triantafyllia T.
AU  - Ristić, Momčilo M.
PY  - 2001
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5697
AB  - Far-infrared and infrared reflectivity measurements have been made on pure BaTiO3, BaTiO3 doped with 5 mol% LiF and (Ba,Ca,Pb)TiO3 at room temperature in the range between 50 and 1000 cm–1. A fitting procedure, based on a four-parameter model, and Kramers-Krönig analysis of the spectra were performed and the optical parameters of the observed ionic oscillators determined. Group theory analysis has been done and the number of experimentally observed active modes was compared with theoretical predictions. It was shown that the high frequency dielectric permittivity increases from 1.88 to 5.13 for pure BaTiO3 sintered at 1320 °C for 2 to 10 h, respectively. It is also shown that infrared optical reflectivity measurements could give useful results for boundary cases when it is difficult to distinguish if a sample has a cubic or tetragonal structure. Reflectivity data and its numerical analysis can also give information on the degree of the sintering process and density of the samples.
PB  - Carl Hanser Verlag
T2  - Zeitschrift fur Metallkunde
T1  - Far Infrared Reflectivity Properties of BaTiO3 Ceramics
VL  - 92
IS  - 2
SP  - 115
EP  - 118
DO  - 10.3139/ijmr-2001-0025
ER  - 

@article{
author = "Nikolić, Pantelija M. and Vasiljević-Radović, Dana and Radulović, Katarina and Đurić, Stevan and Siapkas, Dimitrios I. and Zorba, Triantafyllia T. and Ristić, Momčilo M.",
year = "2001",
abstract = "Far-infrared and infrared reflectivity measurements have been made on pure BaTiO3, BaTiO3 doped with 5 mol% LiF and (Ba,Ca,Pb)TiO3 at room temperature in the range between 50 and 1000 cm–1. A fitting procedure, based on a four-parameter model, and Kramers-Krönig analysis of the spectra were performed and the optical parameters of the observed ionic oscillators determined. Group theory analysis has been done and the number of experimentally observed active modes was compared with theoretical predictions. It was shown that the high frequency dielectric permittivity increases from 1.88 to 5.13 for pure BaTiO3 sintered at 1320 °C for 2 to 10 h, respectively. It is also shown that infrared optical reflectivity measurements could give useful results for boundary cases when it is difficult to distinguish if a sample has a cubic or tetragonal structure. Reflectivity data and its numerical analysis can also give information on the degree of the sintering process and density of the samples.",
publisher = "Carl Hanser Verlag",
journal = "Zeitschrift fur Metallkunde",
title = "Far Infrared Reflectivity Properties of BaTiO3 Ceramics",
volume = "92",
number = "2",
pages = "115-118",
doi = "10.3139/ijmr-2001-0025"
}

Nikolić, P. M., Vasiljević-Radović, D., Radulović, K., Đurić, S., Siapkas, D. I., Zorba, T. T.,& Ristić, M. M.. (2001). Far Infrared Reflectivity Properties of BaTiO3 Ceramics. in Zeitschrift fur Metallkunde
Carl Hanser Verlag., 92(2), 115-118.
https://doi.org/10.3139/ijmr-2001-0025

Nikolić PM, Vasiljević-Radović D, Radulović K, Đurić S, Siapkas DI, Zorba TT, Ristić MM. Far Infrared Reflectivity Properties of BaTiO3 Ceramics. in Zeitschrift fur Metallkunde. 2001;92(2):115-118.
doi:10.3139/ijmr-2001-0025 .

Nikolić, Pantelija M., Vasiljević-Radović, Dana, Radulović, Katarina, Đurić, Stevan, Siapkas, Dimitrios I., Zorba, Triantafyllia T., Ristić, Momčilo M., "Far Infrared Reflectivity Properties of BaTiO3 Ceramics" in Zeitschrift fur Metallkunde, 92, no. 2 (2001):115-118,
https://doi.org/10.3139/ijmr-2001-0025 . .