TY  - CONF
AU  - Pavlović, Vera P.
AU  - Tshantshapanyan, Ani
AU  - Vlahović, Branislav
AU  - Živojinović, Jelena
AU  - Kosanović, Darko
AU  - Pavlović, Vladimir B.
PY  - 2020
UR  - https://dais.sanu.ac.rs/123456789/14758
AB  - The changes in the Raman spectra of electronic materials obtained from mechanically activated BaTiO3 and SrTiO3 powders, with or without additives, are presented in this paper. Mechanical activation, performed in a high-energy planetary ball mill, was chosen as the method for the production of fine-grained nanocrystalline powders with an increased surface activity and an altered micro and/or crystal structure. Having in mind the growing relevance of the development of multiferroic materials, the analysis of Raman spectra was used not only for the structural investigations of the mechanically activated undoped titanate powder, but also for the examination of the mechanically activated Fe/BaTiO3 system and the subsequent hexaferrite formation during the sintering process. Additionally, Raman spectroscopy was applied in the study of the emergence of electroactive crystalline phases in nanocomposites based on semi-crystalline fluoropolymers, such as PVDF (polyvinylidene fluoride), in the case when mechanically activated BaTiO3 powder was used as a filler in the polymer matrix. Furthermore, the effects of the mechanical activation of SrTiO3 powder on the occurrence of polar nano and micro-regions at room temperature, as well as the simultaneous influence of activation and MnO2 addition on structural changes in ceramic SrTiO3 samples, have also been analysed using Raman spectroscopy.
PB  - Belgrade : ETRAN Society
PB  - Belgrade : Academic Mind
C3  - Зборник радова [Електронски извор] / 64. годишњa конференција за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику EТРАН 2020 и 7. интернационалнa конференцијa за електротехнику, електронику и рачунарство ИцЕТРАН 2020 = 7th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2020 and 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering ETRAN 2020
T1  - Raman spectra of the materials based on mechanically activated alkaline earth metal titanates
SP  - NMI 1.1.1
EP  - NMI 1.1.8
UR  - https://hdl.handle.net/21.15107/rcub_dais_14758
ER  - 

@conference{
author = "Pavlović, Vera P. and Tshantshapanyan, Ani and Vlahović, Branislav and Živojinović, Jelena and Kosanović, Darko and Pavlović, Vladimir B.",
year = "2020",
abstract = "The changes in the Raman spectra of electronic materials obtained from mechanically activated BaTiO3 and SrTiO3 powders, with or without additives, are presented in this paper. Mechanical activation, performed in a high-energy planetary ball mill, was chosen as the method for the production of fine-grained nanocrystalline powders with an increased surface activity and an altered micro and/or crystal structure. Having in mind the growing relevance of the development of multiferroic materials, the analysis of Raman spectra was used not only for the structural investigations of the mechanically activated undoped titanate powder, but also for the examination of the mechanically activated Fe/BaTiO3 system and the subsequent hexaferrite formation during the sintering process. Additionally, Raman spectroscopy was applied in the study of the emergence of electroactive crystalline phases in nanocomposites based on semi-crystalline fluoropolymers, such as PVDF (polyvinylidene fluoride), in the case when mechanically activated BaTiO3 powder was used as a filler in the polymer matrix. Furthermore, the effects of the mechanical activation of SrTiO3 powder on the occurrence of polar nano and micro-regions at room temperature, as well as the simultaneous influence of activation and MnO2 addition on structural changes in ceramic SrTiO3 samples, have also been analysed using Raman spectroscopy.",
publisher = "Belgrade : ETRAN Society, Belgrade : Academic Mind",
journal = "Зборник радова [Електронски извор] / 64. годишњa конференција за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику EТРАН 2020 и 7. интернационалнa конференцијa за електротехнику, електронику и рачунарство ИцЕТРАН 2020 = 7th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2020 and 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering ETRAN 2020",
title = "Raman spectra of the materials based on mechanically activated alkaline earth metal titanates",
pages = "NMI 1.1.1-NMI 1.1.8",
url = "https://hdl.handle.net/21.15107/rcub_dais_14758"
}

Pavlović, V. P., Tshantshapanyan, A., Vlahović, B., Živojinović, J., Kosanović, D.,& Pavlović, V. B.. (2020). Raman spectra of the materials based on mechanically activated alkaline earth metal titanates. in Зборник радова [Електронски извор] / 64. годишњa конференција за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику EТРАН 2020 и 7. интернационалнa конференцијa за електротехнику, електронику и рачунарство ИцЕТРАН 2020 = 7th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2020 and 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering ETRAN 2020
Belgrade : ETRAN Society., NMI 1.1.1-NMI 1.1.8.
https://hdl.handle.net/21.15107/rcub_dais_14758

Pavlović VP, Tshantshapanyan A, Vlahović B, Živojinović J, Kosanović D, Pavlović VB. Raman spectra of the materials based on mechanically activated alkaline earth metal titanates. in Зборник радова [Електронски извор] / 64. годишњa конференција за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику EТРАН 2020 и 7. интернационалнa конференцијa за електротехнику, електронику и рачунарство ИцЕТРАН 2020 = 7th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2020 and 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering ETRAN 2020. 2020;:NMI 1.1.1-NMI 1.1.8.
https://hdl.handle.net/21.15107/rcub_dais_14758 .

Pavlović, Vera P., Tshantshapanyan, Ani, Vlahović, Branislav, Živojinović, Jelena, Kosanović, Darko, Pavlović, Vladimir B., "Raman spectra of the materials based on mechanically activated alkaline earth metal titanates" in Зборник радова [Електронски извор] / 64. годишњa конференција за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику EТРАН 2020 и 7. интернационалнa конференцијa за електротехнику, електронику и рачунарство ИцЕТРАН 2020 = 7th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2020 and 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering ETRAN 2020 (2020):NMI 1.1.1-NMI 1.1.8,
https://hdl.handle.net/21.15107/rcub_dais_14758 .

TY  - JOUR
AU  - Obradović, Nina
AU  - Pavlović, Vera P.
AU  - Kachlik, Martin
AU  - Maca, Karel
AU  - Olćan, Dragan
AU  - Đorđević, Antonije
AU  - Tshantshapanyan, Ani
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/4557
AB  - Sintering of pure cordierite 2MgO:2Al2O3:5SiO2, and cordierite with the addition of 5 mass % TeO2 was studied. Green bodies were prepared from powder mixtures mechanically activated in a high-energy planetary mill, shaped by uniaxial (20 MPa) and cold isostatic pressing (1000 MPa). The pressure-less sintering of these specimens was performed at 1350°C for 1 h. High relative density over 95% of the theoretical value was obtained through solid-state reaction and pressure-less sintering of powder activated for 40 min, and for the first time reported in the literature. Phase composition and microstructures of sintered samples were determined by XRD and SEM, coupled with EDS mapping. The real part of the complex relative permittivity of the samples was measured at 200 MHz. The loss tangent of all samples was below the resolution of the measurement setup. A strong correlation between the relative permittivity and the density agrees with previously published data.
PB  - Taylor and Francis
T2  - Advances in Applied Ceramics
T1  - Processing and properties of dense cordierite ceramics obtained through solid-state reaction and pressure-less sintering
SP  - 241
EP  - 248
VL  - 118
IS  - 5
DO  - 10.1080/17436753.2018.1548150
UR  - https://hdl.handle.net/21.15107/rcub_dais_4557
ER  - 

@article{
author = "Obradović, Nina and Pavlović, Vera P. and Kachlik, Martin and Maca, Karel and Olćan, Dragan and Đorđević, Antonije and Tshantshapanyan, Ani and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2019",
abstract = "Sintering of pure cordierite 2MgO:2Al2O3:5SiO2, and cordierite with the addition of 5 mass % TeO2 was studied. Green bodies were prepared from powder mixtures mechanically activated in a high-energy planetary mill, shaped by uniaxial (20 MPa) and cold isostatic pressing (1000 MPa). The pressure-less sintering of these specimens was performed at 1350°C for 1 h. High relative density over 95% of the theoretical value was obtained through solid-state reaction and pressure-less sintering of powder activated for 40 min, and for the first time reported in the literature. Phase composition and microstructures of sintered samples were determined by XRD and SEM, coupled with EDS mapping. The real part of the complex relative permittivity of the samples was measured at 200 MHz. The loss tangent of all samples was below the resolution of the measurement setup. A strong correlation between the relative permittivity and the density agrees with previously published data.",
publisher = "Taylor and Francis",
journal = "Advances in Applied Ceramics",
title = "Processing and properties of dense cordierite ceramics obtained through solid-state reaction and pressure-less sintering",
pages = "241-248",
volume = "118",
number = "5",
doi = "10.1080/17436753.2018.1548150",
url = "https://hdl.handle.net/21.15107/rcub_dais_4557"
}

Obradović, N., Pavlović, V. P., Kachlik, M., Maca, K., Olćan, D., Đorđević, A., Tshantshapanyan, A., Vlahović, B.,& Pavlović, V. B.. (2019). Processing and properties of dense cordierite ceramics obtained through solid-state reaction and pressure-less sintering. in Advances in Applied Ceramics
Taylor and Francis., 118(5), 241-248.
https://doi.org/10.1080/17436753.2018.1548150
https://hdl.handle.net/21.15107/rcub_dais_4557

Obradović N, Pavlović VP, Kachlik M, Maca K, Olćan D, Đorđević A, Tshantshapanyan A, Vlahović B, Pavlović VB. Processing and properties of dense cordierite ceramics obtained through solid-state reaction and pressure-less sintering. in Advances in Applied Ceramics. 2019;118(5):241-248.
doi:10.1080/17436753.2018.1548150
https://hdl.handle.net/21.15107/rcub_dais_4557 .

Obradović, Nina, Pavlović, Vera P., Kachlik, Martin, Maca, Karel, Olćan, Dragan, Đorđević, Antonije, Tshantshapanyan, Ani, Vlahović, Branislav, Pavlović, Vladimir B., "Processing and properties of dense cordierite ceramics obtained through solid-state reaction and pressure-less sintering" in Advances in Applied Ceramics, 118, no. 5 (2019):241-248,
https://doi.org/10.1080/17436753.2018.1548150 .,
https://hdl.handle.net/21.15107/rcub_dais_4557 .

TY  - JOUR
AU  - Obradović, Nina
AU  - Gigov, Mihajlo
AU  - Đorđević, Aleksandar
AU  - Kern, Frank
AU  - Dmitrović, S.
AU  - Matović, Branko
AU  - Ðorđević, Antonije
AU  - Tshantshapanyan, Ani
AU  - Vlahović, Branislav
AU  - Petrović, Predrag
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/6372
AB  - The paper presents results of the influence of mechanical activation of shungite, a carbon-mineral rock material rich in silica and carbon, on its sintering behaviour, and obtaining of pure SiC ceramics. The mechanical activation of the starting powder was performed in a high-energy ball mill in time intervals from 30 to 480 min. The phase composition of the starting powders and sintered samples was analysed by the X-ray diffraction method. The first traces of SiC were detected after sintering at 1350 °C for 2 h in an Ar atmosphere, along with traces of unreacted SiO2. The scanning electron microscopy was performed in order to determine changes in the microstructure. Sintering was performed at various temperatures for 2 h, in an Ar atmosphere and a vacuum. Dielectric properties of the sintered samples were measured in the frequency range from 1 to 500 MHz. The obtained results indicate that the sintered powder is a good candidate for applications as an absorber of electromagnetic waves in microwave engineering. © 2019 University of Novi Sad, Faculty of Technology. All rights reserved.
PB  - Novi Sad : Faculty of Technology, University of Novi Sad
T2  - Processing and Application of Ceramics
T1  - Shungite – a carbon-mineral rock material: Its sinterability and possible applications
SP  - 89
EP  - 97
VL  - 13
IS  - 1
DO  - 10.2298/PAC1901089O
UR  - https://hdl.handle.net/21.15107/rcub_dais_6372
ER  - 

@article{
author = "Obradović, Nina and Gigov, Mihajlo and Đorđević, Aleksandar and Kern, Frank and Dmitrović, S. and Matović, Branko and Ðorđević, Antonije and Tshantshapanyan, Ani and Vlahović, Branislav and Petrović, Predrag and Pavlović, Vladimir B.",
year = "2019",
abstract = "The paper presents results of the influence of mechanical activation of shungite, a carbon-mineral rock material rich in silica and carbon, on its sintering behaviour, and obtaining of pure SiC ceramics. The mechanical activation of the starting powder was performed in a high-energy ball mill in time intervals from 30 to 480 min. The phase composition of the starting powders and sintered samples was analysed by the X-ray diffraction method. The first traces of SiC were detected after sintering at 1350 °C for 2 h in an Ar atmosphere, along with traces of unreacted SiO2. The scanning electron microscopy was performed in order to determine changes in the microstructure. Sintering was performed at various temperatures for 2 h, in an Ar atmosphere and a vacuum. Dielectric properties of the sintered samples were measured in the frequency range from 1 to 500 MHz. The obtained results indicate that the sintered powder is a good candidate for applications as an absorber of electromagnetic waves in microwave engineering. © 2019 University of Novi Sad, Faculty of Technology. All rights reserved.",
publisher = "Novi Sad : Faculty of Technology, University of Novi Sad",
journal = "Processing and Application of Ceramics",
title = "Shungite – a carbon-mineral rock material: Its sinterability and possible applications",
pages = "89-97",
volume = "13",
number = "1",
doi = "10.2298/PAC1901089O",
url = "https://hdl.handle.net/21.15107/rcub_dais_6372"
}

Obradović, N., Gigov, M., Đorđević, A., Kern, F., Dmitrović, S., Matović, B., Ðorđević, A., Tshantshapanyan, A., Vlahović, B., Petrović, P.,& Pavlović, V. B.. (2019). Shungite – a carbon-mineral rock material: Its sinterability and possible applications. in Processing and Application of Ceramics
Novi Sad : Faculty of Technology, University of Novi Sad., 13(1), 89-97.
https://doi.org/10.2298/PAC1901089O
https://hdl.handle.net/21.15107/rcub_dais_6372

Obradović N, Gigov M, Đorđević A, Kern F, Dmitrović S, Matović B, Ðorđević A, Tshantshapanyan A, Vlahović B, Petrović P, Pavlović VB. Shungite – a carbon-mineral rock material: Its sinterability and possible applications. in Processing and Application of Ceramics. 2019;13(1):89-97.
doi:10.2298/PAC1901089O
https://hdl.handle.net/21.15107/rcub_dais_6372 .

Obradović, Nina, Gigov, Mihajlo, Đorđević, Aleksandar, Kern, Frank, Dmitrović, S., Matović, Branko, Ðorđević, Antonije, Tshantshapanyan, Ani, Vlahović, Branislav, Petrović, Predrag, Pavlović, Vladimir B., "Shungite – a carbon-mineral rock material: Its sinterability and possible applications" in Processing and Application of Ceramics, 13, no. 1 (2019):89-97,
https://doi.org/10.2298/PAC1901089O .,
https://hdl.handle.net/21.15107/rcub_dais_6372 .