TY  - JOUR
AU  - Grigalaitis, Robertas
AU  - Salasevicius, R.
AU  - Banys, Juras
AU  - Vijatović Petrović, Mirjana
AU  - Džunuzović, Adis
AU  - ZAGHETE, MARIA
AU  - Ferreira Teixeira, Guilhermina
AU  - Stojanović, Biljana D
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2104
AB  - Flexible multiferroic composite films are perspective materials for sensors, actuators and similar com-ponents of wearable and stretchable devices. Here we present the study of functional properties of flexible composites prepared by embedding nickel zinc ferrite and barium titanate powder into polyvinylidene fluo-ride (PVDF) polymer optimizing the ratio of polymer and fillers to get the best flexibility and functionality. ATR-FTIR analysis revealed that hot pressing of the flexible films causeda transformation of about 38% of the electro-inactive PVDF α phase into electrically active β and γ phases. Broadband dielectric spectroscopy revealed two relaxation processes responsible for PVDF and space charge relaxations. Activation energies of  both  processes  and  the  freezing  temperature  of  PVDF  to  the  glass  phase  were  estimated  for  all  films.  Ferroelectric  measurements  have  shown  unsaturated  hysteresis  loops  for  all  samples,  although  the  clear  dependence of the amount of the electrically active phase on polarization values of composites is visible.
PB  - Lietuvos mokslų akademija
T2  - Lithuanian Journal of Physics
T1  - FUNCTIONAL PROPERTIES OF PVDF-BASED NZF-BT FLEXIBLE FILMS
EP  - 204
IS  - 4
SP  - 195
VL  - 62
DO  - 10.3952/physics.v62i4.4825
ER  - 

@article{
author = "Grigalaitis, Robertas and Salasevicius, R. and Banys, Juras and Vijatović Petrović, Mirjana and Džunuzović, Adis and ZAGHETE, MARIA and Ferreira Teixeira, Guilhermina and Stojanović, Biljana D",
year = "2022",
abstract = "Flexible multiferroic composite films are perspective materials for sensors, actuators and similar com-ponents of wearable and stretchable devices. Here we present the study of functional properties of flexible composites prepared by embedding nickel zinc ferrite and barium titanate powder into polyvinylidene fluo-ride (PVDF) polymer optimizing the ratio of polymer and fillers to get the best flexibility and functionality. ATR-FTIR analysis revealed that hot pressing of the flexible films causeda transformation of about 38% of the electro-inactive PVDF α phase into electrically active β and γ phases. Broadband dielectric spectroscopy revealed two relaxation processes responsible for PVDF and space charge relaxations. Activation energies of  both  processes  and  the  freezing  temperature  of  PVDF  to  the  glass  phase  were  estimated  for  all  films.  Ferroelectric  measurements  have  shown  unsaturated  hysteresis  loops  for  all  samples,  although  the  clear  dependence of the amount of the electrically active phase on polarization values of composites is visible.",
publisher = "Lietuvos mokslų akademija",
journal = "Lithuanian Journal of Physics",
title = "FUNCTIONAL PROPERTIES OF PVDF-BASED NZF-BT FLEXIBLE FILMS",
pages = "204-195",
number = "4",
volume = "62",
doi = "10.3952/physics.v62i4.4825"
}

Grigalaitis, R., Salasevicius, R., Banys, J., Vijatović Petrović, M., Džunuzović, A., ZAGHETE, M., Ferreira Teixeira, G.,& Stojanović, B. D.. (2022). FUNCTIONAL PROPERTIES OF PVDF-BASED NZF-BT FLEXIBLE FILMS. in Lithuanian Journal of Physics
Lietuvos mokslų akademija., 62(4), 195-204.
https://doi.org/10.3952/physics.v62i4.4825

Grigalaitis R, Salasevicius R, Banys J, Vijatović Petrović M, Džunuzović A, ZAGHETE M, Ferreira Teixeira G, Stojanović BD. FUNCTIONAL PROPERTIES OF PVDF-BASED NZF-BT FLEXIBLE FILMS. in Lithuanian Journal of Physics. 2022;62(4):195-204.
doi:10.3952/physics.v62i4.4825 .

Grigalaitis, Robertas, Salasevicius, R., Banys, Juras, Vijatović Petrović, Mirjana, Džunuzović, Adis, ZAGHETE, MARIA, Ferreira Teixeira, Guilhermina, Stojanović, Biljana D, "FUNCTIONAL PROPERTIES OF PVDF-BASED NZF-BT FLEXIBLE FILMS" in Lithuanian Journal of Physics, 62, no. 4 (2022):195-204,
https://doi.org/10.3952/physics.v62i4.4825 . .

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 . .