TY  - JOUR
AU  - Bobić, Jelena
AU  - Ferreira, Teixeira, G.
AU  - Grigalaitis, R.
AU  - Gyergyek, S.
AU  - Vijatović Petrović, Mirjana
AU  - Ap Zaghete, M.
AU  - Stojanović, Biljana D
PY  - 2019
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1223
AB  - The preparation and properties of thick flexible three-phase composite films based on lead zirconium titanate (PZT) and various ferrites (nickel zinc ferrite (NZF) and cobalt ferrite (CF)) were reported in this study. Properties of three-phase composite films were compared with pure polyvinylidene fluoride (PVDF) and PZT-PVDF films. X-ray diffraction data indicated the formation of well crystallized structure of PZT and NZF/CF phases, without the presence of undesirable phases. Scanning electron micrographs showed that the ceramic particles were dispersed homogeneously in the PVDF matrix and atomic force microscopy confirmed that the size of the particles is around 30 nm. Non-saturated hysteresis loops were evident in all samples due to the presence of highly conductive ferrite phases. Under magnetic field of 10 kOe, composite films exhibited a typical ferromagnetic response. Dielectric properties were investigated in the temperature range from -128 to 250 degrees C and frequency range of 400 Hz-1 MHz. The results showed that the value of dielectric constant of the PVDF/PZT/ferrite composites increased about 25% above the one obtained for pure PVDF.
PB  - Springeropen, London
T2  - Journal of Advanced Ceramics
T1  - PZT-NZF/CF ferrite flexible thick films: Structural, dielectric, ferroelectric, and magnetic characterization
EP  - 554
IS  - 4
SP  - 545
VL  - 8
DO  - 10.1007/s40145-019-0337-1
ER  - 

@article{
author = "Bobić, Jelena and Ferreira, Teixeira, G. and Grigalaitis, R. and Gyergyek, S. and Vijatović Petrović, Mirjana and Ap Zaghete, M. and Stojanović, Biljana D",
year = "2019",
abstract = "The preparation and properties of thick flexible three-phase composite films based on lead zirconium titanate (PZT) and various ferrites (nickel zinc ferrite (NZF) and cobalt ferrite (CF)) were reported in this study. Properties of three-phase composite films were compared with pure polyvinylidene fluoride (PVDF) and PZT-PVDF films. X-ray diffraction data indicated the formation of well crystallized structure of PZT and NZF/CF phases, without the presence of undesirable phases. Scanning electron micrographs showed that the ceramic particles were dispersed homogeneously in the PVDF matrix and atomic force microscopy confirmed that the size of the particles is around 30 nm. Non-saturated hysteresis loops were evident in all samples due to the presence of highly conductive ferrite phases. Under magnetic field of 10 kOe, composite films exhibited a typical ferromagnetic response. Dielectric properties were investigated in the temperature range from -128 to 250 degrees C and frequency range of 400 Hz-1 MHz. The results showed that the value of dielectric constant of the PVDF/PZT/ferrite composites increased about 25% above the one obtained for pure PVDF.",
publisher = "Springeropen, London",
journal = "Journal of Advanced Ceramics",
title = "PZT-NZF/CF ferrite flexible thick films: Structural, dielectric, ferroelectric, and magnetic characterization",
pages = "554-545",
number = "4",
volume = "8",
doi = "10.1007/s40145-019-0337-1"
}

Bobić, J., Ferreira, T. G., Grigalaitis, R., Gyergyek, S., Vijatović Petrović, M., Ap Zaghete, M.,& Stojanović, B. D.. (2019). PZT-NZF/CF ferrite flexible thick films: Structural, dielectric, ferroelectric, and magnetic characterization. in Journal of Advanced Ceramics
Springeropen, London., 8(4), 545-554.
https://doi.org/10.1007/s40145-019-0337-1

Bobić J, Ferreira TG, Grigalaitis R, Gyergyek S, Vijatović Petrović M, Ap Zaghete M, Stojanović BD. PZT-NZF/CF ferrite flexible thick films: Structural, dielectric, ferroelectric, and magnetic characterization. in Journal of Advanced Ceramics. 2019;8(4):545-554.
doi:10.1007/s40145-019-0337-1 .

Bobić, Jelena, Ferreira, Teixeira, G., Grigalaitis, R., Gyergyek, S., Vijatović Petrović, Mirjana, Ap Zaghete, M., Stojanović, Biljana D, "PZT-NZF/CF ferrite flexible thick films: Structural, dielectric, ferroelectric, and magnetic characterization" in Journal of Advanced Ceramics, 8, no. 4 (2019):545-554,
https://doi.org/10.1007/s40145-019-0337-1 . .

TY  - JOUR
AU  - Džunuzović, Adis
AU  - Vijatović Petrović, Mirjana
AU  - Bobić, Jelena
AU  - Ilić, Nikola
AU  - Ivanov, M.
AU  - Grigalaitis, R.
AU  - Banys, J.
AU  - Stojanović, Biljana D
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1143
AB  - Di-phase ceramic composites, with general formula xNi(0.7)Zn(0.3)Fe(2)O(4) - (1-x)BaTiO3(x = 0.9, 0.7, 0.5, 0.3, 0.1), were prepared by a mixing method. X-ray analysis, for powder and ceramics, indicated the formation of ferrite and barium titanate phases without the presence of the impurities. SEM analysis indicated that the composite morphology contained two types of grains, polygonal and rounded. Homogeneous microstructure and the smallest grain size were obtained in ceramics with 70% of barium titanate. The electrical properties of these materials were investigated using impedance spectroscopy, dielectric and ferroelectric measurements. The NZF-BT(30-70) composite has shown better electrical properties in comparison to other investigated ceramics, confirmed by dielectric and ferroelectric data analysis. Saturation magnetization and coercive field decreased with the increase of the content of ferroelectric phase.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Magneto-electric properties of xNi(0.7)Zn(0.3)Fe(2)O(4) - (1-x)BaTiO3 multiferroic composites
EP  - 694
IS  - 1
SP  - 683
VL  - 44
DO  - 10.1016/j.ceramint.2017.09.229
ER  - 

@article{
author = "Džunuzović, Adis and Vijatović Petrović, Mirjana and Bobić, Jelena and Ilić, Nikola and Ivanov, M. and Grigalaitis, R. and Banys, J. and Stojanović, Biljana D",
year = "2018",
abstract = "Di-phase ceramic composites, with general formula xNi(0.7)Zn(0.3)Fe(2)O(4) - (1-x)BaTiO3(x = 0.9, 0.7, 0.5, 0.3, 0.1), were prepared by a mixing method. X-ray analysis, for powder and ceramics, indicated the formation of ferrite and barium titanate phases without the presence of the impurities. SEM analysis indicated that the composite morphology contained two types of grains, polygonal and rounded. Homogeneous microstructure and the smallest grain size were obtained in ceramics with 70% of barium titanate. The electrical properties of these materials were investigated using impedance spectroscopy, dielectric and ferroelectric measurements. The NZF-BT(30-70) composite has shown better electrical properties in comparison to other investigated ceramics, confirmed by dielectric and ferroelectric data analysis. Saturation magnetization and coercive field decreased with the increase of the content of ferroelectric phase.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Magneto-electric properties of xNi(0.7)Zn(0.3)Fe(2)O(4) - (1-x)BaTiO3 multiferroic composites",
pages = "694-683",
number = "1",
volume = "44",
doi = "10.1016/j.ceramint.2017.09.229"
}

Džunuzović, A., Vijatović Petrović, M., Bobić, J., Ilić, N., Ivanov, M., Grigalaitis, R., Banys, J.,& Stojanović, B. D.. (2018). Magneto-electric properties of xNi(0.7)Zn(0.3)Fe(2)O(4) - (1-x)BaTiO3 multiferroic composites. in Ceramics International
Elsevier Sci Ltd, Oxford., 44(1), 683-694.
https://doi.org/10.1016/j.ceramint.2017.09.229

Džunuzović A, Vijatović Petrović M, Bobić J, Ilić N, Ivanov M, Grigalaitis R, Banys J, Stojanović BD. Magneto-electric properties of xNi(0.7)Zn(0.3)Fe(2)O(4) - (1-x)BaTiO3 multiferroic composites. in Ceramics International. 2018;44(1):683-694.
doi:10.1016/j.ceramint.2017.09.229 .

Džunuzović, Adis, Vijatović Petrović, Mirjana, Bobić, Jelena, Ilić, Nikola, Ivanov, M., Grigalaitis, R., Banys, J., Stojanović, Biljana D, "Magneto-electric properties of xNi(0.7)Zn(0.3)Fe(2)O(4) - (1-x)BaTiO3 multiferroic composites" in Ceramics International, 44, no. 1 (2018):683-694,
https://doi.org/10.1016/j.ceramint.2017.09.229 . .

TY  - JOUR
AU  - Vijatović Petrović, Mirjana
AU  - Grigalaitis, R.
AU  - Džunuzović, Adis
AU  - Bobić, Jelena
AU  - Stojanović, Biljana D
AU  - Salasevicius, R.
AU  - Banys, J.
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1189
AB  - Multiferroic composite materials based on antimony doped barium titanate/nickel ferrite were prepared by a mixing route. In order to obtain fine grained microstructure composite materials, pure constituent phases were prepared via chemical methods. The optimization of processing parameters has been made in order to reduce the chemical reactions at the interfaces between ferroelectric-ferrite phases. XRD data confirmed the presence of both barium titanate and nickel ferrite phases in the ceramic samples. The resistivity data obtained from impedance as well as calculated activation energies indicated the grain boundary contribution as a more influential effect in the total resistivity of ceramics. Dielectric permittivity enhancement in comparison with composites prepared from pure barium titanate was noticed. Well defined hysteresis loops have shown the changes of properties induced by the modification of the barium titanate phase with Sb doping and due to the co-existence of two different phases in the materials. The comparative study of magnetic properties of obtained composite materials was presented. The results on the magnetodielectric properties are understood in terms of the stress induced variations in the polarization and dielectric permittivity.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Positive influence of Sb doping on properties of di-phase multiferroics based on barium titanate and nickel ferrite
EP  - 1053
SP  - 1043
VL  - 749
DO  - 10.1016/j.jallcom.2018.03.381
ER  - 

@article{
author = "Vijatović Petrović, Mirjana and Grigalaitis, R. and Džunuzović, Adis and Bobić, Jelena and Stojanović, Biljana D and Salasevicius, R. and Banys, J.",
year = "2018",
abstract = "Multiferroic composite materials based on antimony doped barium titanate/nickel ferrite were prepared by a mixing route. In order to obtain fine grained microstructure composite materials, pure constituent phases were prepared via chemical methods. The optimization of processing parameters has been made in order to reduce the chemical reactions at the interfaces between ferroelectric-ferrite phases. XRD data confirmed the presence of both barium titanate and nickel ferrite phases in the ceramic samples. The resistivity data obtained from impedance as well as calculated activation energies indicated the grain boundary contribution as a more influential effect in the total resistivity of ceramics. Dielectric permittivity enhancement in comparison with composites prepared from pure barium titanate was noticed. Well defined hysteresis loops have shown the changes of properties induced by the modification of the barium titanate phase with Sb doping and due to the co-existence of two different phases in the materials. The comparative study of magnetic properties of obtained composite materials was presented. The results on the magnetodielectric properties are understood in terms of the stress induced variations in the polarization and dielectric permittivity.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Positive influence of Sb doping on properties of di-phase multiferroics based on barium titanate and nickel ferrite",
pages = "1053-1043",
volume = "749",
doi = "10.1016/j.jallcom.2018.03.381"
}

Vijatović Petrović, M., Grigalaitis, R., Džunuzović, A., Bobić, J., Stojanović, B. D., Salasevicius, R.,& Banys, J.. (2018). Positive influence of Sb doping on properties of di-phase multiferroics based on barium titanate and nickel ferrite. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 749, 1043-1053.
https://doi.org/10.1016/j.jallcom.2018.03.381

Vijatović Petrović M, Grigalaitis R, Džunuzović A, Bobić J, Stojanović BD, Salasevicius R, Banys J. Positive influence of Sb doping on properties of di-phase multiferroics based on barium titanate and nickel ferrite. in Journal of Alloys and Compounds. 2018;749:1043-1053.
doi:10.1016/j.jallcom.2018.03.381 .

Vijatović Petrović, Mirjana, Grigalaitis, R., Džunuzović, Adis, Bobić, Jelena, Stojanović, Biljana D, Salasevicius, R., Banys, J., "Positive influence of Sb doping on properties of di-phase multiferroics based on barium titanate and nickel ferrite" in Journal of Alloys and Compounds, 749 (2018):1043-1053,
https://doi.org/10.1016/j.jallcom.2018.03.381 . .

TY  - JOUR
AU  - Vijatović Petrović, Mirjana
AU  - Grigalaitis, R.
AU  - Ilić, Nikola
AU  - Bobić, Jelena
AU  - Džunuzović, Adis
AU  - Banys, J.
AU  - Stojanović, Biljana D
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1058
AB  - Conventional solid-state method was used to prepare powders of pure and barium titanate (BT) doped with different concentration of samarium. Influence of samarium addition on the structure modification, grain growth inhibition and microstructure development was studied. Dielectric properties of doped samples were significantly modified. With doping, a diffuse kind of ferro-para phase transition was induced, phase transitions positions were shifted and dielectric permittivity values were lowered in comparison with pure barium titanate. Detailed impedance and modulus data analysis were presented. The impedance complex plane showed two semicircular arcs for pure BT and one single depressed semicircular arc for all doped ceramics. Different electro-active regions in the modulus plane plots were also distinguish. The comparison between impedance and modulus scaling behavior presented the localized movement of charge carriers in the pure barium titanate and both, short and long range relaxations in the ceramics doped with 0.05 mol% of Sm. P-E hysteresis loops have shown the dilution of ferroelectric properties with Sm doping.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Interdependence between structure and electrical characteristics in Sm-doped barium titanate
EP  - 968
SP  - 959
VL  - 724
DO  - 10.1016/j.jallcom.2017.07.099
ER  - 

@article{
author = "Vijatović Petrović, Mirjana and Grigalaitis, R. and Ilić, Nikola and Bobić, Jelena and Džunuzović, Adis and Banys, J. and Stojanović, Biljana D",
year = "2017",
abstract = "Conventional solid-state method was used to prepare powders of pure and barium titanate (BT) doped with different concentration of samarium. Influence of samarium addition on the structure modification, grain growth inhibition and microstructure development was studied. Dielectric properties of doped samples were significantly modified. With doping, a diffuse kind of ferro-para phase transition was induced, phase transitions positions were shifted and dielectric permittivity values were lowered in comparison with pure barium titanate. Detailed impedance and modulus data analysis were presented. The impedance complex plane showed two semicircular arcs for pure BT and one single depressed semicircular arc for all doped ceramics. Different electro-active regions in the modulus plane plots were also distinguish. The comparison between impedance and modulus scaling behavior presented the localized movement of charge carriers in the pure barium titanate and both, short and long range relaxations in the ceramics doped with 0.05 mol% of Sm. P-E hysteresis loops have shown the dilution of ferroelectric properties with Sm doping.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Interdependence between structure and electrical characteristics in Sm-doped barium titanate",
pages = "968-959",
volume = "724",
doi = "10.1016/j.jallcom.2017.07.099"
}

Vijatović Petrović, M., Grigalaitis, R., Ilić, N., Bobić, J., Džunuzović, A., Banys, J.,& Stojanović, B. D.. (2017). Interdependence between structure and electrical characteristics in Sm-doped barium titanate. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 724, 959-968.
https://doi.org/10.1016/j.jallcom.2017.07.099

Vijatović Petrović M, Grigalaitis R, Ilić N, Bobić J, Džunuzović A, Banys J, Stojanović BD. Interdependence between structure and electrical characteristics in Sm-doped barium titanate. in Journal of Alloys and Compounds. 2017;724:959-968.
doi:10.1016/j.jallcom.2017.07.099 .

Vijatović Petrović, Mirjana, Grigalaitis, R., Ilić, Nikola, Bobić, Jelena, Džunuzović, Adis, Banys, J., Stojanović, Biljana D, "Interdependence between structure and electrical characteristics in Sm-doped barium titanate" in Journal of Alloys and Compounds, 724 (2017):959-968,
https://doi.org/10.1016/j.jallcom.2017.07.099 . .

TY  - CHAP
AU  - Bobić, Jelena
AU  - Macutkević, J.
AU  - Grigalaitis, R.
AU  - Ivanov, M.
AU  - Vijatović Petrović, Mirjana
AU  - Banys, J.
AU  - Stojanović, Biljana D
PY  - 2016
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/963
AB  - Relaxor ferroelectrics or relaxors are a class of disordered crystals possessing a peculiar structure and properties. Relaxor ferroelectrics are found in many applications in electronics such as multilayer ceramic capacitors, electro-optical devices, and medical imaging devices. It is well known that the properties of ferroelectric ceramics are very sensitive to their microstructure. There are many factors that could have an influence on final properties of a material such as the powder synthesis method, grain size, and defects. Besides that, the perovskite oxide materials are known to be great hosts for various dopants and the majority of well-studied relaxors are of this structure. This chapter reviews the modifications of electrical properties of relaxor ferroelectrics by grain size reduction and introduction of dopants on the basis of three different families: classical relaxor Pb(Mg1/3Nb2/3)O3 (PMN), relaxor ferroelectrics PbSc1/2Nb1/2O3 (PSN) with perovskite structure, and relaxor ferroelectrics BaBi4Ti4O15 (BBT) with Aurivillius structure.
PB  - Wiley
T2  - Nanoscale Ferroelectrics and Multiferroics: Key Processing and Characterization Issues, and Nanoscal
T1  - Correlation between microstructure and electrical properties of ferroelectric relaxors
EP  - 587
SP  - 555
DO  - 10.1002/9781118935743.ch17
ER  - 

@inbook{
author = "Bobić, Jelena and Macutkević, J. and Grigalaitis, R. and Ivanov, M. and Vijatović Petrović, Mirjana and Banys, J. and Stojanović, Biljana D",
year = "2016",
abstract = "Relaxor ferroelectrics or relaxors are a class of disordered crystals possessing a peculiar structure and properties. Relaxor ferroelectrics are found in many applications in electronics such as multilayer ceramic capacitors, electro-optical devices, and medical imaging devices. It is well known that the properties of ferroelectric ceramics are very sensitive to their microstructure. There are many factors that could have an influence on final properties of a material such as the powder synthesis method, grain size, and defects. Besides that, the perovskite oxide materials are known to be great hosts for various dopants and the majority of well-studied relaxors are of this structure. This chapter reviews the modifications of electrical properties of relaxor ferroelectrics by grain size reduction and introduction of dopants on the basis of three different families: classical relaxor Pb(Mg1/3Nb2/3)O3 (PMN), relaxor ferroelectrics PbSc1/2Nb1/2O3 (PSN) with perovskite structure, and relaxor ferroelectrics BaBi4Ti4O15 (BBT) with Aurivillius structure.",
publisher = "Wiley",
journal = "Nanoscale Ferroelectrics and Multiferroics: Key Processing and Characterization Issues, and Nanoscal",
booktitle = "Correlation between microstructure and electrical properties of ferroelectric relaxors",
pages = "587-555",
doi = "10.1002/9781118935743.ch17"
}

Bobić, J., Macutkević, J., Grigalaitis, R., Ivanov, M., Vijatović Petrović, M., Banys, J.,& Stojanović, B. D.. (2016). Correlation between microstructure and electrical properties of ferroelectric relaxors. in Nanoscale Ferroelectrics and Multiferroics: Key Processing and Characterization Issues, and Nanoscal
Wiley., 555-587.
https://doi.org/10.1002/9781118935743.ch17

Bobić J, Macutkević J, Grigalaitis R, Ivanov M, Vijatović Petrović M, Banys J, Stojanović BD. Correlation between microstructure and electrical properties of ferroelectric relaxors. in Nanoscale Ferroelectrics and Multiferroics: Key Processing and Characterization Issues, and Nanoscal. 2016;:555-587.
doi:10.1002/9781118935743.ch17 .

Bobić, Jelena, Macutkević, J., Grigalaitis, R., Ivanov, M., Vijatović Petrović, Mirjana, Banys, J., Stojanović, Biljana D, "Correlation between microstructure and electrical properties of ferroelectric relaxors" in Nanoscale Ferroelectrics and Multiferroics: Key Processing and Characterization Issues, and Nanoscal (2016):555-587,
https://doi.org/10.1002/9781118935743.ch17 . .

TY  - JOUR
AU  - Vijatović Petrović, Mirjana
AU  - Bobić, Jelena
AU  - Grigalaitis, R.
AU  - Ilić, Nikola
AU  - Džunuzović, Adis
AU  - Jankauskaite, V.
AU  - Banys, J.
AU  - Stojanović, Biljana D
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/878
AB  - Modified Pechini process was used to prepare nanopowders of barium titanate (BT) co-doped with different concentrations of niobium and manganese. Influence of dopants on the grain growth inhibition and microstructure development was analyzed. The addition of dopants significantly influenced the dielectric properties modification. The obtained epsilon-T curves of all ceramics have the shape of typical ferroelectric material but the increase of dielectric permittivity value and movement of phase transitions with different dopant concentrations were clearly noticed. Grain and grain boundary resistivities for all co-doped ceramics were extracted from detailed impedance analysis and the grain boundary effect was indicated as a dominant effect in the total conduction of the materials. The well-defined and saturated P-E hysteresis loops of the ceramics confirmed the existence of ferroelectric properties.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Donor-acceptor joint effect in barium titanate systems
EP  - 11371
IS  - 9
SP  - 11365
VL  - 41
DO  - 10.1016/j.ceramint.2015.05.096
ER  - 

@article{
author = "Vijatović Petrović, Mirjana and Bobić, Jelena and Grigalaitis, R. and Ilić, Nikola and Džunuzović, Adis and Jankauskaite, V. and Banys, J. and Stojanović, Biljana D",
year = "2015",
abstract = "Modified Pechini process was used to prepare nanopowders of barium titanate (BT) co-doped with different concentrations of niobium and manganese. Influence of dopants on the grain growth inhibition and microstructure development was analyzed. The addition of dopants significantly influenced the dielectric properties modification. The obtained epsilon-T curves of all ceramics have the shape of typical ferroelectric material but the increase of dielectric permittivity value and movement of phase transitions with different dopant concentrations were clearly noticed. Grain and grain boundary resistivities for all co-doped ceramics were extracted from detailed impedance analysis and the grain boundary effect was indicated as a dominant effect in the total conduction of the materials. The well-defined and saturated P-E hysteresis loops of the ceramics confirmed the existence of ferroelectric properties.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Donor-acceptor joint effect in barium titanate systems",
pages = "11371-11365",
number = "9",
volume = "41",
doi = "10.1016/j.ceramint.2015.05.096"
}

Vijatović Petrović, M., Bobić, J., Grigalaitis, R., Ilić, N., Džunuzović, A., Jankauskaite, V., Banys, J.,& Stojanović, B. D.. (2015). Donor-acceptor joint effect in barium titanate systems. in Ceramics International
Elsevier Sci Ltd, Oxford., 41(9), 11365-11371.
https://doi.org/10.1016/j.ceramint.2015.05.096

Vijatović Petrović M, Bobić J, Grigalaitis R, Ilić N, Džunuzović A, Jankauskaite V, Banys J, Stojanović BD. Donor-acceptor joint effect in barium titanate systems. in Ceramics International. 2015;41(9):11365-11371.
doi:10.1016/j.ceramint.2015.05.096 .

Vijatović Petrović, Mirjana, Bobić, Jelena, Grigalaitis, R., Ilić, Nikola, Džunuzović, Adis, Jankauskaite, V., Banys, J., Stojanović, Biljana D, "Donor-acceptor joint effect in barium titanate systems" in Ceramics International, 41, no. 9 (2015):11365-11371,
https://doi.org/10.1016/j.ceramint.2015.05.096 . .

TY  - JOUR
AU  - Bobić, Jelena
AU  - Vijatović Petrović, Mirjana
AU  - Ilić, Nikola
AU  - Palaimiene, E.
AU  - Grigalaitis, R.
AU  - Paiva-Santos, C. O.
AU  - Cilense, Mario
AU  - Stojanović, Biljana D
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/834
AB  - The processing of ferroelectric BaBi4Ti4O15 (BBT) ceramics from powders prepared by conventional solid state reaction (SSR) and mechanochemical activation (MA) has been investigated. It was shown that MA synthesis reduces the synthesis temperature of BBT powders, leading to smaller particles with reduced anisotropy and consequently to smaller grain size of ceramics. Dielectric properties were investigated in a wide range of temperatures (20-800 degrees C) and frequencies (1.21 kHz to 1 MHz). The relative dielectric permittivity at Curie temperature was higher for solid state obtained ceramics than for the mechanically treated ones. The conductivity of sintered samples was studied, suggesting decreasing of conductivity of BBT-MA in comparison with BBT-SS ceramics. The influence of the grain and the grain boundaries contribution to the dielectric behavior in both ceramics was analyzed through impedance spectroscopy. A well-defined ferroelectric hysteresis loop was obtained for both samples.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Lead-free BaBi4Ti4O15 ceramics: Effect of synthesis methods on phase formation and electrical properties
EP  - 316
IS  - 1
SP  - 309
VL  - 41
DO  - 10.1016/j.ceramint.2014.08.073
ER  - 

@article{
author = "Bobić, Jelena and Vijatović Petrović, Mirjana and Ilić, Nikola and Palaimiene, E. and Grigalaitis, R. and Paiva-Santos, C. O. and Cilense, Mario and Stojanović, Biljana D",
year = "2015",
abstract = "The processing of ferroelectric BaBi4Ti4O15 (BBT) ceramics from powders prepared by conventional solid state reaction (SSR) and mechanochemical activation (MA) has been investigated. It was shown that MA synthesis reduces the synthesis temperature of BBT powders, leading to smaller particles with reduced anisotropy and consequently to smaller grain size of ceramics. Dielectric properties were investigated in a wide range of temperatures (20-800 degrees C) and frequencies (1.21 kHz to 1 MHz). The relative dielectric permittivity at Curie temperature was higher for solid state obtained ceramics than for the mechanically treated ones. The conductivity of sintered samples was studied, suggesting decreasing of conductivity of BBT-MA in comparison with BBT-SS ceramics. The influence of the grain and the grain boundaries contribution to the dielectric behavior in both ceramics was analyzed through impedance spectroscopy. A well-defined ferroelectric hysteresis loop was obtained for both samples.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Lead-free BaBi4Ti4O15 ceramics: Effect of synthesis methods on phase formation and electrical properties",
pages = "316-309",
number = "1",
volume = "41",
doi = "10.1016/j.ceramint.2014.08.073"
}

Bobić, J., Vijatović Petrović, M., Ilić, N., Palaimiene, E., Grigalaitis, R., Paiva-Santos, C. O., Cilense, M.,& Stojanović, B. D.. (2015). Lead-free BaBi4Ti4O15 ceramics: Effect of synthesis methods on phase formation and electrical properties. in Ceramics International
Elsevier Sci Ltd, Oxford., 41(1), 309-316.
https://doi.org/10.1016/j.ceramint.2014.08.073

Bobić J, Vijatović Petrović M, Ilić N, Palaimiene E, Grigalaitis R, Paiva-Santos CO, Cilense M, Stojanović BD. Lead-free BaBi4Ti4O15 ceramics: Effect of synthesis methods on phase formation and electrical properties. in Ceramics International. 2015;41(1):309-316.
doi:10.1016/j.ceramint.2014.08.073 .

Bobić, Jelena, Vijatović Petrović, Mirjana, Ilić, Nikola, Palaimiene, E., Grigalaitis, R., Paiva-Santos, C. O., Cilense, Mario, Stojanović, Biljana D, "Lead-free BaBi4Ti4O15 ceramics: Effect of synthesis methods on phase formation and electrical properties" in Ceramics International, 41, no. 1 (2015):309-316,
https://doi.org/10.1016/j.ceramint.2014.08.073 . .

TY  - CONF
AU  - Pralgauskaite, S.
AU  - Matukas, J.
AU  - Grigalaitis, R.
AU  - Banys, J.
AU  - Zamaraite, I.
AU  - Vijatović Petrović, Mirjana
AU  - Bobić, Jelena
AU  - Stojanović, Biljana D
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/922
AB  - In this work we present detailed investigation of low frequency noise characteristics of BaTiO3-NiFe2O4 ceramic composites of different percentage of NiFe2O4. At the particular temperatures (that gets under the broad maximum of dielectric permittivity observed around 300 K) very intensive few separate peaks of random telegraph noise signal were observed. It shows that phase transition in the investigated materials goes through separate stages instead of the smeared out one. Characteristic times of the physical processes during the phase transition are close to one millisecond, and activation energy is around (0,340,49) eV.
PB  - Institute of Electrical and Electronics Engineers Inc.
C3  - 2015 International Conference on Noise and Fluctuations, ICNF 2015
T1  - Low frequency noise characteristics of BaTiO3-NiFe2O4 composites at phase transition
DO  - 10.1109/ICNF.2015.7288587
ER  - 

@conference{
author = "Pralgauskaite, S. and Matukas, J. and Grigalaitis, R. and Banys, J. and Zamaraite, I. and Vijatović Petrović, Mirjana and Bobić, Jelena and Stojanović, Biljana D",
year = "2015",
abstract = "In this work we present detailed investigation of low frequency noise characteristics of BaTiO3-NiFe2O4 ceramic composites of different percentage of NiFe2O4. At the particular temperatures (that gets under the broad maximum of dielectric permittivity observed around 300 K) very intensive few separate peaks of random telegraph noise signal were observed. It shows that phase transition in the investigated materials goes through separate stages instead of the smeared out one. Characteristic times of the physical processes during the phase transition are close to one millisecond, and activation energy is around (0,340,49) eV.",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
journal = "2015 International Conference on Noise and Fluctuations, ICNF 2015",
title = "Low frequency noise characteristics of BaTiO3-NiFe2O4 composites at phase transition",
doi = "10.1109/ICNF.2015.7288587"
}

Pralgauskaite, S., Matukas, J., Grigalaitis, R., Banys, J., Zamaraite, I., Vijatović Petrović, M., Bobić, J.,& Stojanović, B. D.. (2015). Low frequency noise characteristics of BaTiO3-NiFe2O4 composites at phase transition. in 2015 International Conference on Noise and Fluctuations, ICNF 2015
Institute of Electrical and Electronics Engineers Inc...
https://doi.org/10.1109/ICNF.2015.7288587

Pralgauskaite S, Matukas J, Grigalaitis R, Banys J, Zamaraite I, Vijatović Petrović M, Bobić J, Stojanović BD. Low frequency noise characteristics of BaTiO3-NiFe2O4 composites at phase transition. in 2015 International Conference on Noise and Fluctuations, ICNF 2015. 2015;.
doi:10.1109/ICNF.2015.7288587 .

Pralgauskaite, S., Matukas, J., Grigalaitis, R., Banys, J., Zamaraite, I., Vijatović Petrović, Mirjana, Bobić, Jelena, Stojanović, Biljana D, "Low frequency noise characteristics of BaTiO3-NiFe2O4 composites at phase transition" in 2015 International Conference on Noise and Fluctuations, ICNF 2015 (2015),
https://doi.org/10.1109/ICNF.2015.7288587 . .

TY  - JOUR
AU  - Grigalaitis, R.
AU  - Vijatović Petrović, Mirjana
AU  - Baltrunas, D.
AU  - Mazeika, K.
AU  - Stojanović, Biljana D
AU  - Banys, J.
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/843
AB  - A broadband dielectric investigation and Mossbauer studies were performed on 0.7BaTiO(3)-0.3NiFe(2)O(4) composite ceramics prepared from chemically obtained barium titanate and nickel ferrite powders. Dielectric spectroscopy revealed a Debye-type relaxation at frequencies between 10 GHz and 1 THz. The relaxation time slows down on cooling according to the Arrhenius law which can be attributed to the transformation of the system from the paraelectric to the ferroelectric phase through an intermediate relaxor state. The temperature dependence of the center shift of the Mossbauer spectrum was analyzed by applying Debye and Einstein models. Its deviation from these models can be attributed to the anharmonicity. It is also possible that the center shift is affected by the Fe atoms incorporated in BaTiO3 lattice or at the interfaces between BaTiO3 and NiFe2O4.
PB  - Springer, Dordrecht
T2  - Journal of Materials Science-Materials in Electronics
T1  - Broadband dielectric and Mossbauer studies of BaTiO3-NiFe2O4 composite multiferroics
EP  - 9734
IS  - 12
SP  - 9727
VL  - 26
DO  - 10.1007/s10854-015-3641-8
ER  - 

@article{
author = "Grigalaitis, R. and Vijatović Petrović, Mirjana and Baltrunas, D. and Mazeika, K. and Stojanović, Biljana D and Banys, J.",
year = "2015",
abstract = "A broadband dielectric investigation and Mossbauer studies were performed on 0.7BaTiO(3)-0.3NiFe(2)O(4) composite ceramics prepared from chemically obtained barium titanate and nickel ferrite powders. Dielectric spectroscopy revealed a Debye-type relaxation at frequencies between 10 GHz and 1 THz. The relaxation time slows down on cooling according to the Arrhenius law which can be attributed to the transformation of the system from the paraelectric to the ferroelectric phase through an intermediate relaxor state. The temperature dependence of the center shift of the Mossbauer spectrum was analyzed by applying Debye and Einstein models. Its deviation from these models can be attributed to the anharmonicity. It is also possible that the center shift is affected by the Fe atoms incorporated in BaTiO3 lattice or at the interfaces between BaTiO3 and NiFe2O4.",
publisher = "Springer, Dordrecht",
journal = "Journal of Materials Science-Materials in Electronics",
title = "Broadband dielectric and Mossbauer studies of BaTiO3-NiFe2O4 composite multiferroics",
pages = "9734-9727",
number = "12",
volume = "26",
doi = "10.1007/s10854-015-3641-8"
}

Grigalaitis, R., Vijatović Petrović, M., Baltrunas, D., Mazeika, K., Stojanović, B. D.,& Banys, J.. (2015). Broadband dielectric and Mossbauer studies of BaTiO3-NiFe2O4 composite multiferroics. in Journal of Materials Science-Materials in Electronics
Springer, Dordrecht., 26(12), 9727-9734.
https://doi.org/10.1007/s10854-015-3641-8

Grigalaitis R, Vijatović Petrović M, Baltrunas D, Mazeika K, Stojanović BD, Banys J. Broadband dielectric and Mossbauer studies of BaTiO3-NiFe2O4 composite multiferroics. in Journal of Materials Science-Materials in Electronics. 2015;26(12):9727-9734.
doi:10.1007/s10854-015-3641-8 .

Grigalaitis, R., Vijatović Petrović, Mirjana, Baltrunas, D., Mazeika, K., Stojanović, Biljana D, Banys, J., "Broadband dielectric and Mossbauer studies of BaTiO3-NiFe2O4 composite multiferroics" in Journal of Materials Science-Materials in Electronics, 26, no. 12 (2015):9727-9734,
https://doi.org/10.1007/s10854-015-3641-8 . .

TY  - JOUR
AU  - Grigalaitis, R.
AU  - Vijatović Petrović, Mirjana
AU  - Bobić, Jelena
AU  - Džunuzović, Adis
AU  - Sobiestianskas, R
AU  - Brilingas, A
AU  - Stojanović, Biljana D
AU  - Banys, J
PY  - 2014
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/790
AB  - Multiferroic composites with the general formula x BaTiO3-(1-x) NiFe2O4 (x=0.5, 0.7, 0.8) were prepared by mixing chemically obtained nickel ferrite and barium titanate powders. Optimum processing parameters for a reduction of chemical reactions at the interfaces between ferroelectric-ferrite phases were found. The presence of the nickel ferrite and barium titanate single phases was detected by X-ray measurements. Good quality of the homogenized ceramics containing both phases was confirmed by use of scanning electron microscopy. Dielectric measurements showed the superposition of the multiple conductivity mechanisms responsible for the dielectric dispersion at frequencies up to 1 MHz. Calculated activation energies for DC conductivity showed the contribution of oxygen vacancies and Maxwell-Wagner related phenomena. Magnetic measurements of the composite materials were performed showing the coercivity increase and saturation of the magnetization moment decrease with the increase of barium titanate content.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Dielectric and magnetic properties of BaTiO3-NiFe2O4 multiferroic composites
EP  - 6170
IS  - 4
SP  - 6165
VL  - 40
DO  - 10.1016/j.ceramint.2013.11.069
ER  - 

@article{
author = "Grigalaitis, R. and Vijatović Petrović, Mirjana and Bobić, Jelena and Džunuzović, Adis and Sobiestianskas, R and Brilingas, A and Stojanović, Biljana D and Banys, J",
year = "2014",
abstract = "Multiferroic composites with the general formula x BaTiO3-(1-x) NiFe2O4 (x=0.5, 0.7, 0.8) were prepared by mixing chemically obtained nickel ferrite and barium titanate powders. Optimum processing parameters for a reduction of chemical reactions at the interfaces between ferroelectric-ferrite phases were found. The presence of the nickel ferrite and barium titanate single phases was detected by X-ray measurements. Good quality of the homogenized ceramics containing both phases was confirmed by use of scanning electron microscopy. Dielectric measurements showed the superposition of the multiple conductivity mechanisms responsible for the dielectric dispersion at frequencies up to 1 MHz. Calculated activation energies for DC conductivity showed the contribution of oxygen vacancies and Maxwell-Wagner related phenomena. Magnetic measurements of the composite materials were performed showing the coercivity increase and saturation of the magnetization moment decrease with the increase of barium titanate content.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Dielectric and magnetic properties of BaTiO3-NiFe2O4 multiferroic composites",
pages = "6170-6165",
number = "4",
volume = "40",
doi = "10.1016/j.ceramint.2013.11.069"
}

Grigalaitis, R., Vijatović Petrović, M., Bobić, J., Džunuzović, A., Sobiestianskas, R., Brilingas, A., Stojanović, B. D.,& Banys, J.. (2014). Dielectric and magnetic properties of BaTiO3-NiFe2O4 multiferroic composites. in Ceramics International
Elsevier Sci Ltd, Oxford., 40(4), 6165-6170.
https://doi.org/10.1016/j.ceramint.2013.11.069

Grigalaitis R, Vijatović Petrović M, Bobić J, Džunuzović A, Sobiestianskas R, Brilingas A, Stojanović BD, Banys J. Dielectric and magnetic properties of BaTiO3-NiFe2O4 multiferroic composites. in Ceramics International. 2014;40(4):6165-6170.
doi:10.1016/j.ceramint.2013.11.069 .

Grigalaitis, R., Vijatović Petrović, Mirjana, Bobić, Jelena, Džunuzović, Adis, Sobiestianskas, R, Brilingas, A, Stojanović, Biljana D, Banys, J, "Dielectric and magnetic properties of BaTiO3-NiFe2O4 multiferroic composites" in Ceramics International, 40, no. 4 (2014):6165-6170,
https://doi.org/10.1016/j.ceramint.2013.11.069 . .

TY  - JOUR
AU  - Vijatović Petrović, Mirjana
AU  - Bobić, Jelena
AU  - Grigalaitis, R.
AU  - Stojanović, Biljana D
AU  - Banys, J.
PY  - 2013
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/630
AB  - Barium titanate ceramics doped with 0.3 mol.% lanthanum and co-doped with 0.3 mol.% lanthanum and 0.05 mol.% manganese were investigated. The powders were prepared by a modified polymeric precursor method based on the Pechini process. The ceramics were obtained by sintering at 1300 degrees C for 8 h. The influence of dopants on structural changes and grain size reduction was analyzed. The presence of dopants influenced the tetragonality of the barium titanate crystal structure. Reduction of polygonal grain size with dopant addition was noticed. In the doped ceramics, characteristic phase transitions were shifted to lower temperatures in comparison with pure barium titanate. The dielectric permittivity value showed the tendency of a slight increase with lanthanum addition and further increase with adding of manganese. La as a single dopant increased the diffuseness of phase transitions indicating the formation of a diffuse ferroelectric material but in the co-doped ceramics the phase transition diffuseness decreased. The resistivity of the co-doped ceramics was higher than for lanthanum doped ceramics, indicating possible segregation of manganese at grain boundaries that influenced the total resistivity of the material.
T2  - Acta Physica Polonica A
T1  - La-doped and La/Mn-co-doped Barium Titanate Ceramics
EP  - 160
IS  - 1
SP  - 155
VL  - 124
DO  - 10.12693/APhysPolA.124.155
ER  - 

@article{
author = "Vijatović Petrović, Mirjana and Bobić, Jelena and Grigalaitis, R. and Stojanović, Biljana D and Banys, J.",
year = "2013",
abstract = "Barium titanate ceramics doped with 0.3 mol.% lanthanum and co-doped with 0.3 mol.% lanthanum and 0.05 mol.% manganese were investigated. The powders were prepared by a modified polymeric precursor method based on the Pechini process. The ceramics were obtained by sintering at 1300 degrees C for 8 h. The influence of dopants on structural changes and grain size reduction was analyzed. The presence of dopants influenced the tetragonality of the barium titanate crystal structure. Reduction of polygonal grain size with dopant addition was noticed. In the doped ceramics, characteristic phase transitions were shifted to lower temperatures in comparison with pure barium titanate. The dielectric permittivity value showed the tendency of a slight increase with lanthanum addition and further increase with adding of manganese. La as a single dopant increased the diffuseness of phase transitions indicating the formation of a diffuse ferroelectric material but in the co-doped ceramics the phase transition diffuseness decreased. The resistivity of the co-doped ceramics was higher than for lanthanum doped ceramics, indicating possible segregation of manganese at grain boundaries that influenced the total resistivity of the material.",
journal = "Acta Physica Polonica A",
title = "La-doped and La/Mn-co-doped Barium Titanate Ceramics",
pages = "160-155",
number = "1",
volume = "124",
doi = "10.12693/APhysPolA.124.155"
}

Vijatović Petrović, M., Bobić, J., Grigalaitis, R., Stojanović, B. D.,& Banys, J.. (2013). La-doped and La/Mn-co-doped Barium Titanate Ceramics. in Acta Physica Polonica A, 124(1), 155-160.
https://doi.org/10.12693/APhysPolA.124.155

Vijatović Petrović M, Bobić J, Grigalaitis R, Stojanović BD, Banys J. La-doped and La/Mn-co-doped Barium Titanate Ceramics. in Acta Physica Polonica A. 2013;124(1):155-160.
doi:10.12693/APhysPolA.124.155 .

Vijatović Petrović, Mirjana, Bobić, Jelena, Grigalaitis, R., Stojanović, Biljana D, Banys, J., "La-doped and La/Mn-co-doped Barium Titanate Ceramics" in Acta Physica Polonica A, 124, no. 1 (2013):155-160,
https://doi.org/10.12693/APhysPolA.124.155 . .