TY  - CONF
AU  - Filipović, Suzana
AU  - Obradović, Nina
AU  - Krstić, Jugoslav
AU  - Šćepanović, M.
AU  - Pavlović, Vladimir B.
AU  - Paunović, Vesna
AU  - Ristić, Momčilo M.
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/442
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2861
AB  - In this article the influence of ball milling process on structure of MgO-TiO2 system, along with its influence on electrical properties of post-sintering samples, were investigated. Mixtures of MgO-TiO2 powders were mechanically activated in a planetary ball mill for time interval from 0 to 120 minutes. On thus obtained powders, structural investigations have been performed. N2 adsorption method was used to determine the BET specific surface area and pore size distribution. Unusual results were obtained: specific surface area continuously decreases up to 40 minutes of activation and after that increases, reaching its minimum value of 5.5 m2/g. The influence of mechanical activation on lattice vibration spectra was examined by Raman spectroscopy at room temperature. For sintered samples characterization, Raman scattering spectroscopy has been used. Very similar spectra for all samples were observed. Raman spectroscopy of sintered samples indicates a presence of two phases, while varieties in spectra were explained with different ratio of present phases. Effect of activation and sintering process on microstructure was investigated by scanning electron microscopy (SEM). Electrical measurements showed difference in dielectric constant (εr), loss tangent (tgδ) and specific resistance (ρ) as a function of time of mechanical treatment.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts
T1  - Structural characterization and electrical properties of sintered magnesium-titanate ceramics
SP  - 80
EP  - 80
UR  - https://hdl.handle.net/21.15107/rcub_dais_442
ER  - 

@conference{
author = "Filipović, Suzana and Obradović, Nina and Krstić, Jugoslav and Šćepanović, M. and Pavlović, Vladimir B. and Paunović, Vesna and Ristić, Momčilo M.",
year = "2012",
abstract = "In this article the influence of ball milling process on structure of MgO-TiO2 system, along with its influence on electrical properties of post-sintering samples, were investigated. Mixtures of MgO-TiO2 powders were mechanically activated in a planetary ball mill for time interval from 0 to 120 minutes. On thus obtained powders, structural investigations have been performed. N2 adsorption method was used to determine the BET specific surface area and pore size distribution. Unusual results were obtained: specific surface area continuously decreases up to 40 minutes of activation and after that increases, reaching its minimum value of 5.5 m2/g. The influence of mechanical activation on lattice vibration spectra was examined by Raman spectroscopy at room temperature. For sintered samples characterization, Raman scattering spectroscopy has been used. Very similar spectra for all samples were observed. Raman spectroscopy of sintered samples indicates a presence of two phases, while varieties in spectra were explained with different ratio of present phases. Effect of activation and sintering process on microstructure was investigated by scanning electron microscopy (SEM). Electrical measurements showed difference in dielectric constant (εr), loss tangent (tgδ) and specific resistance (ρ) as a function of time of mechanical treatment.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts",
title = "Structural characterization and electrical properties of sintered magnesium-titanate ceramics",
pages = "80-80",
url = "https://hdl.handle.net/21.15107/rcub_dais_442"
}

Filipović, S., Obradović, N., Krstić, J., Šćepanović, M., Pavlović, V. B., Paunović, V.,& Ristić, M. M.. (2012). Structural characterization and electrical properties of sintered magnesium-titanate ceramics. in The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts
Belgrade : Materials Research Society of Serbia., 80-80.
https://hdl.handle.net/21.15107/rcub_dais_442

Filipović S, Obradović N, Krstić J, Šćepanović M, Pavlović VB, Paunović V, Ristić MM. Structural characterization and electrical properties of sintered magnesium-titanate ceramics. in The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts. 2012;:80-80.
https://hdl.handle.net/21.15107/rcub_dais_442 .

Filipović, Suzana, Obradović, Nina, Krstić, Jugoslav, Šćepanović, M., Pavlović, Vladimir B., Paunović, Vesna, Ristić, Momčilo M., "Structural characterization and electrical properties of sintered magnesium-titanate ceramics" in The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts (2012):80-80,
https://hdl.handle.net/21.15107/rcub_dais_442 .

TY  - CONF
AU  - Filipović, Suzana
AU  - Obradović, Nina
AU  - Krstić, Jugoslav
AU  - Kosanović, Darko
AU  - Šćepanović, M.
AU  - Pavlović, Vladimir B.
AU  - Maričić, Aleksa
AU  - Ristić, Momčilo M.
PY  - 2011
UR  - http://dais.sanu.ac.rs/123456789/629
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2611
AB  - Mixtures of MgO-TiO2 powders were mechanically activated in a planetary ball mill for time interval from 0 to 120 minutes. On thus obtained powders, structural investigations have been performed. N2 adsorption method was used to determine the BET specific surface area and pore size distribution. Unusual results are obtained: specific surface area continuously decreases up to 40 minutes of activation and after that increases, reaching its minimum value of 4.4 m2/g. The influence of mechanical activation on lattice vibrational spectra was examined by Raman spectroscopy at room temperatures. The differential thermal analysis has been performed in order to investigate thermal behavior of the mixtures, indicating at several endothermal peaks in range of RT to 1100oC. SEM gave information about changes in microstructures, showing the clear decrease in particle size.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts
T1  - Structural characterization of mechanically activated MgO-TiO2 system
SP  - 101
EP  - 101
UR  - https://hdl.handle.net/21.15107/rcub_dais_629
ER  - 

@conference{
author = "Filipović, Suzana and Obradović, Nina and Krstić, Jugoslav and Kosanović, Darko and Šćepanović, M. and Pavlović, Vladimir B. and Maričić, Aleksa and Ristić, Momčilo M.",
year = "2011",
abstract = "Mixtures of MgO-TiO2 powders were mechanically activated in a planetary ball mill for time interval from 0 to 120 minutes. On thus obtained powders, structural investigations have been performed. N2 adsorption method was used to determine the BET specific surface area and pore size distribution. Unusual results are obtained: specific surface area continuously decreases up to 40 minutes of activation and after that increases, reaching its minimum value of 4.4 m2/g. The influence of mechanical activation on lattice vibrational spectra was examined by Raman spectroscopy at room temperatures. The differential thermal analysis has been performed in order to investigate thermal behavior of the mixtures, indicating at several endothermal peaks in range of RT to 1100oC. SEM gave information about changes in microstructures, showing the clear decrease in particle size.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts",
title = "Structural characterization of mechanically activated MgO-TiO2 system",
pages = "101-101",
url = "https://hdl.handle.net/21.15107/rcub_dais_629"
}

Filipović, S., Obradović, N., Krstić, J., Kosanović, D., Šćepanović, M., Pavlović, V. B., Maričić, A.,& Ristić, M. M.. (2011). Structural characterization of mechanically activated MgO-TiO2 system. in The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts
Belgrade : Materials Research Society of Serbia., 101-101.
https://hdl.handle.net/21.15107/rcub_dais_629

Filipović S, Obradović N, Krstić J, Kosanović D, Šćepanović M, Pavlović VB, Maričić A, Ristić MM. Structural characterization of mechanically activated MgO-TiO2 system. in The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts. 2011;:101-101.
https://hdl.handle.net/21.15107/rcub_dais_629 .

Filipović, Suzana, Obradović, Nina, Krstić, Jugoslav, Kosanović, Darko, Šćepanović, M., Pavlović, Vladimir B., Maričić, Aleksa, Ristić, Momčilo M., "Structural characterization of mechanically activated MgO-TiO2 system" in The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts (2011):101-101,
https://hdl.handle.net/21.15107/rcub_dais_629 .

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  - Blagojević, Vladimir D.
AU  - Paraskevopoulos, Konstantinos M.
AU  - Zorba, T.
AU  - Vasiljević-Radović, Dana
AU  - Nikolić, Pantelija M.
AU  - Ristić, Momčilo M.
PY  - 2007
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4269
AB  - Far infrared reflection spectra of NiO polycrystals sintered at 1100 °C for various times (30–240 min) were measured at room temperature using a FTIR Spectrometer—Brucker 113V. The measured spectra depended on the sintering time due to differences in the microstructural morphology of the material and were compared with the NiO single crystal reflectivity diagram. Numerical analyses of the experimental spectra were performed using Kramers-Kronig analysis, a four-parameter model of coupled oscillators and the effective medium modeling theory. In the three-component effective medium model based on Bruggeman's theory we assumed the presence of pores, intergranular material and crystalline grains. The intergranular material and crystalline grains were defined as single and coupled ionic oscillators.
PB  - Elsevier
T2  - Journal of the European Ceramic Society
T1  - Far infrared properties of sintered NiO
VL  - 27
IS  - 2-3
SP  - 469
EP  - 474
DO  - 10.1016/j.jeurceramsoc.2006.04.065
ER  - 

@article{
author = "Nikolić, Maria Vesna and Blagojević, Vladimir D. and Paraskevopoulos, Konstantinos M. and Zorba, T. and Vasiljević-Radović, Dana and Nikolić, Pantelija M. and Ristić, Momčilo M.",
year = "2007",
abstract = "Far infrared reflection spectra of NiO polycrystals sintered at 1100 °C for various times (30–240 min) were measured at room temperature using a FTIR Spectrometer—Brucker 113V. The measured spectra depended on the sintering time due to differences in the microstructural morphology of the material and were compared with the NiO single crystal reflectivity diagram. Numerical analyses of the experimental spectra were performed using Kramers-Kronig analysis, a four-parameter model of coupled oscillators and the effective medium modeling theory. In the three-component effective medium model based on Bruggeman's theory we assumed the presence of pores, intergranular material and crystalline grains. The intergranular material and crystalline grains were defined as single and coupled ionic oscillators.",
publisher = "Elsevier",
journal = "Journal of the European Ceramic Society",
title = "Far infrared properties of sintered NiO",
volume = "27",
number = "2-3",
pages = "469-474",
doi = "10.1016/j.jeurceramsoc.2006.04.065"
}

Nikolić, M. V., Blagojević, V. D., Paraskevopoulos, K. M., Zorba, T., Vasiljević-Radović, D., Nikolić, P. M.,& Ristić, M. M.. (2007). Far infrared properties of sintered NiO. in Journal of the European Ceramic Society
Elsevier., 27(2-3), 469-474.
https://doi.org/10.1016/j.jeurceramsoc.2006.04.065

Nikolić MV, Blagojević VD, Paraskevopoulos KM, Zorba T, Vasiljević-Radović D, Nikolić PM, Ristić MM. Far infrared properties of sintered NiO. in Journal of the European Ceramic Society. 2007;27(2-3):469-474.
doi:10.1016/j.jeurceramsoc.2006.04.065 .

Nikolić, Maria Vesna, Blagojević, Vladimir D., Paraskevopoulos, Konstantinos M., Zorba, T., Vasiljević-Radović, Dana, Nikolić, Pantelija M., Ristić, Momčilo M., "Far infrared properties of sintered NiO" in Journal of the European Ceramic Society, 27, no. 2-3 (2007):469-474,
https://doi.org/10.1016/j.jeurceramsoc.2006.04.065 . .

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  - Đurić, S.
AU  - Radulović, Katarina
AU  - Vasiljević-Radović, Dana
AU  - Nikolić, Maria Vesna
AU  - Ristić, Momčilo M.
PY  - 2002
UR  - http://dais.sanu.ac.rs/123456789/235
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3100
AB  - The possibility of characterization of aluminium powders using a horizontal coherer has been considered. Al powders of known dimension were treated with a high frequency electromagnetic field or with a DC electric field, which were increased until a dielectric breakdown occurred. Using a multifunctional card PC-428 Electronic Design and a suitable interface between the coherer and PC, the activation time of the coherer was measured as a function of powder dimension and the distance between the coherer electrodes. It was also shown that the average dimension of powders of unknown size could be determined using the coherer.
PB  - Belgrade : International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Characterisation of dispersive systems using a coherer
VL  - 34
IS  - 1
SP  - 101
EP  - 108
DO  - 10.2298/SOS0201101N
ER  - 

@article{
author = "Nikolić, Pantelija M. and Đurić, S. and Radulović, Katarina and Vasiljević-Radović, Dana and Nikolić, Maria Vesna and Ristić, Momčilo M.",
year = "2002",
abstract = "The possibility of characterization of aluminium powders using a horizontal coherer has been considered. Al powders of known dimension were treated with a high frequency electromagnetic field or with a DC electric field, which were increased until a dielectric breakdown occurred. Using a multifunctional card PC-428 Electronic Design and a suitable interface between the coherer and PC, the activation time of the coherer was measured as a function of powder dimension and the distance between the coherer electrodes. It was also shown that the average dimension of powders of unknown size could be determined using the coherer.",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Characterisation of dispersive systems using a coherer",
volume = "34",
number = "1",
pages = "101-108",
doi = "10.2298/SOS0201101N"
}

Nikolić, P. M., Đurić, S., Radulović, K., Vasiljević-Radović, D., Nikolić, M. V.,& Ristić, M. M.. (2002). Characterisation of dispersive systems using a coherer. in Science of Sintering
Belgrade : International Institute for the Science of Sintering., 34(1), 101-108.
https://doi.org/10.2298/SOS0201101N

Nikolić PM, Đurić S, Radulović K, Vasiljević-Radović D, Nikolić MV, Ristić MM. Characterisation of dispersive systems using a coherer. in Science of Sintering. 2002;34(1):101-108.
doi:10.2298/SOS0201101N .

Nikolić, Pantelija M., Đurić, S., Radulović, Katarina, Vasiljević-Radović, Dana, Nikolić, Maria Vesna, Ristić, Momčilo M., "Characterisation of dispersive systems using a coherer" in Science of Sintering, 34, no. 1 (2002):101-108,
https://doi.org/10.2298/SOS0201101N . .

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 . .