TY  - JOUR
AU  - Džunuzović, Adis
AU  - Vijatović Petrović, Mirjana
AU  - Stojadinović, B. S.
AU  - Ilić, Nikola
AU  - Bobić, Jelena
AU  - Foschini, Cesar Renato
AU  - Zaghete, M. A.
AU  - Stojanović, Biljana D
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/882
AB  - Nickel zinc ferrite (NZF) and barium titanate (BT) were prepared by auto-combustion synthesis as an effective, simple and rapid method. Multiferroic composites with the general formula yNi(1-x)Zn(x)Fe(2)O(4)-(1-y)BT (x=0.3, 0.5, 0.7, y=0.5) were prepared by mixing NZF and BT powders in a liquid medium in the ball mill. The FEG micrographs indicated the primary particle size less than 100 nm for both, barium titanate and nickel zinc ferrite phases. X-ray analysis and Raman spectroscopy indicated the formation of well crystallized structure of NZF and BT phase in the composite powders and ceramics, with a small contribution of the secondary phase. The homogenous phase distribution in obtained composites was also confirmed. Impedance spectroscopy measurements were carried out in order to investigate the electrical resistivity of materials, showing that grain boundaries have greater impact on the total resistivity than grains. Saturation magnetization and remnant magnetization continuously decrease with barium titanate phase increase.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Multiferroic (NiZn) Fe2O4-BaTiO3 composites prepared from nanopowders by auto-combustion method
EP  - 13200
IS  - 10
SP  - 13189
VL  - 41
DO  - 10.1016/j.ceramint.2015.07.096
ER  - 

@article{
author = "Džunuzović, Adis and Vijatović Petrović, Mirjana and Stojadinović, B. S. and Ilić, Nikola and Bobić, Jelena and Foschini, Cesar Renato and Zaghete, M. A. and Stojanović, Biljana D",
year = "2015",
abstract = "Nickel zinc ferrite (NZF) and barium titanate (BT) were prepared by auto-combustion synthesis as an effective, simple and rapid method. Multiferroic composites with the general formula yNi(1-x)Zn(x)Fe(2)O(4)-(1-y)BT (x=0.3, 0.5, 0.7, y=0.5) were prepared by mixing NZF and BT powders in a liquid medium in the ball mill. The FEG micrographs indicated the primary particle size less than 100 nm for both, barium titanate and nickel zinc ferrite phases. X-ray analysis and Raman spectroscopy indicated the formation of well crystallized structure of NZF and BT phase in the composite powders and ceramics, with a small contribution of the secondary phase. The homogenous phase distribution in obtained composites was also confirmed. Impedance spectroscopy measurements were carried out in order to investigate the electrical resistivity of materials, showing that grain boundaries have greater impact on the total resistivity than grains. Saturation magnetization and remnant magnetization continuously decrease with barium titanate phase increase.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Multiferroic (NiZn) Fe2O4-BaTiO3 composites prepared from nanopowders by auto-combustion method",
pages = "13200-13189",
number = "10",
volume = "41",
doi = "10.1016/j.ceramint.2015.07.096"
}

Džunuzović, A., Vijatović Petrović, M., Stojadinović, B. S., Ilić, N., Bobić, J., Foschini, C. R., Zaghete, M. A.,& Stojanović, B. D.. (2015). Multiferroic (NiZn) Fe2O4-BaTiO3 composites prepared from nanopowders by auto-combustion method. in Ceramics International
Elsevier Sci Ltd, Oxford., 41(10), 13189-13200.
https://doi.org/10.1016/j.ceramint.2015.07.096

Džunuzović A, Vijatović Petrović M, Stojadinović BS, Ilić N, Bobić J, Foschini CR, Zaghete MA, Stojanović BD. Multiferroic (NiZn) Fe2O4-BaTiO3 composites prepared from nanopowders by auto-combustion method. in Ceramics International. 2015;41(10):13189-13200.
doi:10.1016/j.ceramint.2015.07.096 .

Džunuzović, Adis, Vijatović Petrović, Mirjana, Stojadinović, B. S., Ilić, Nikola, Bobić, Jelena, Foschini, Cesar Renato, Zaghete, M. A., Stojanović, Biljana D, "Multiferroic (NiZn) Fe2O4-BaTiO3 composites prepared from nanopowders by auto-combustion method" in Ceramics International, 41, no. 10 (2015):13189-13200,
https://doi.org/10.1016/j.ceramint.2015.07.096 . .

TY  - JOUR
AU  - Žunić, Milan
AU  - Branković, Goran
AU  - Foschini, Cesar Renato
AU  - Cilense, Mario
AU  - Longo, Elson
AU  - Varela, JA
PY  - 2013
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/712
AB  - Optimization of the major properties of anodes based on proton conductors, such as microstructure, conductivity and chemical stability, is yet to be achieved. In this study we investigated the influence of indium on the chemical stability, microstructural and electrical characteristics of proton conducting NiO-BaCe0.9 xInxY0.1O3 delta (NiO-BCIYx) anodes. Four compositions of cermet anode substrates NiO-BCIYx were prepared using the method of evaporation and decomposition of solutions and suspensions (EDSS). Sintered anode substrates were reduced and their microstructural and electrical properties were examined before and after reduction as a function of the amount of indium. Anode substrates tested on chemical stability in the CO2 atmosphere showed high stability compared to anode substrates based on commonly used doped barium cerates. Microstructural properties of the anode pellets before and after testing in CO2 were investigated using X-ray diffraction analysis. Impedance spectroscopy measurements were used for evaluation of electrical properties of the anode pellets and the conductivity values of reduced anodes of more than 14 S cm (1) at 600 degrees C confirmed percolations through Ni particles. Under fuel cell operating conditions, the cell with a Ni-BCIY20 anode achieved the highest performance, demonstrating a peak power density 223 mW/cm(2) at 700 degrees C confirming the functionality of Ni-BCIY anodes.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Influence of the indium concentration on microstructural and electrical properties of proton conducting NiO-BaCe0.9-xInxY0.1O3-delta cermet anodes for IT-SOFC application
EP  - 260
SP  - 254
VL  - 563
DO  - 10.1016/j.jallcom.2013.02.122
ER  - 

@article{
author = "Žunić, Milan and Branković, Goran and Foschini, Cesar Renato and Cilense, Mario and Longo, Elson and Varela, JA",
year = "2013",
abstract = "Optimization of the major properties of anodes based on proton conductors, such as microstructure, conductivity and chemical stability, is yet to be achieved. In this study we investigated the influence of indium on the chemical stability, microstructural and electrical characteristics of proton conducting NiO-BaCe0.9 xInxY0.1O3 delta (NiO-BCIYx) anodes. Four compositions of cermet anode substrates NiO-BCIYx were prepared using the method of evaporation and decomposition of solutions and suspensions (EDSS). Sintered anode substrates were reduced and their microstructural and electrical properties were examined before and after reduction as a function of the amount of indium. Anode substrates tested on chemical stability in the CO2 atmosphere showed high stability compared to anode substrates based on commonly used doped barium cerates. Microstructural properties of the anode pellets before and after testing in CO2 were investigated using X-ray diffraction analysis. Impedance spectroscopy measurements were used for evaluation of electrical properties of the anode pellets and the conductivity values of reduced anodes of more than 14 S cm (1) at 600 degrees C confirmed percolations through Ni particles. Under fuel cell operating conditions, the cell with a Ni-BCIY20 anode achieved the highest performance, demonstrating a peak power density 223 mW/cm(2) at 700 degrees C confirming the functionality of Ni-BCIY anodes.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Influence of the indium concentration on microstructural and electrical properties of proton conducting NiO-BaCe0.9-xInxY0.1O3-delta cermet anodes for IT-SOFC application",
pages = "260-254",
volume = "563",
doi = "10.1016/j.jallcom.2013.02.122"
}

Žunić, M., Branković, G., Foschini, C. R., Cilense, M., Longo, E.,& Varela, J.. (2013). Influence of the indium concentration on microstructural and electrical properties of proton conducting NiO-BaCe0.9-xInxY0.1O3-delta cermet anodes for IT-SOFC application. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 563, 254-260.
https://doi.org/10.1016/j.jallcom.2013.02.122

Žunić M, Branković G, Foschini CR, Cilense M, Longo E, Varela J. Influence of the indium concentration on microstructural and electrical properties of proton conducting NiO-BaCe0.9-xInxY0.1O3-delta cermet anodes for IT-SOFC application. in Journal of Alloys and Compounds. 2013;563:254-260.
doi:10.1016/j.jallcom.2013.02.122 .

Žunić, Milan, Branković, Goran, Foschini, Cesar Renato, Cilense, Mario, Longo, Elson, Varela, JA, "Influence of the indium concentration on microstructural and electrical properties of proton conducting NiO-BaCe0.9-xInxY0.1O3-delta cermet anodes for IT-SOFC application" in Journal of Alloys and Compounds, 563 (2013):254-260,
https://doi.org/10.1016/j.jallcom.2013.02.122 . .