PROPERTIES OF VARIOUS MULTIFERROICS PREPARED BY MIXING METHOD
Апстракт
Multiferroic composites with formula Ba(Ti0.95Zr0.5)O3–Ni0.7Zn0.3Fe2O4/
CoFe2O4/Ni0.7Cu0.01Sm0.05Zn0.29Fe1.95O4 (BTZ(95-5)–NZF/CF/NCSZF) were
prepared by mixing chemically obtained NZF, CF, NCSZF and BTZ(95-5) powders
in the planetary mill for 24 h. All powders were prepared by the auto-combustion
method starting from metal nitrates, titanium(IV) isopropoxide, zirconium(IV)
oxynitrate and citric acid solution. Citric acid was added as a fuel and also as a
complexing agent [1]. The optimization of sintering process was performed and the
powders were pressed and sintered at 1250 °C for 4 h. X-ray measurements of
obtained composites confirmed the presence of NZF, CF, NCSZF, BTZ(95-5)
phases without the presence of any intermediate phases or impurities. Impendence
analysis of all investigated samples has shown two semicircular arcs due to the
presence of different relaxation processes that originated from the grain and grain
boundary contributions. The results of polarization v...s. electric field measurements
have shown the influence of magnetic phases type and concentration on the
ferroelectric properties of the composites. Due to high conductivity of ferrite phases
and presence of interfacial polarization, the shapes of these curves differed from the
conventional ferroelectric materials [2]. The values of remnant polarization were:
0.72, 0.34, 0.013 μC/cm2 for the composites BTZ(95-5)-NZF, BTZ(95-5)-CF,
BTZ(95-5)-NCSZF, respectively and for the saturation polarization were 1.2, 0.6
and 0.023 μC/cm2. In comparison with BTZ(95-5) this values are lower, Pr = 1.1
μC/cm2 and Ps = 4.5. However, due to the existence of non-saturated ferroelectric
loops, the comparison of Pr and Ps was done at the appropriate field strength.
Кључне речи:
Multiferroic composites / auto-combustion method / Impendence analysis / powders / sinteringИзвор:
5th Conference of The Serbian Society for Ceramic Materials, 2019Издавач:
- Institute for Multidisciplinary Research, University of Belgrade Kneza Višeslava 1, 11000 Belgrade, Serbia
Институција/група
Institut za multidisciplinarna istraživanjaTY - CONF AU - Džunuzović, Adis AU - Vijatović Petrović, Mirjana AU - Ilić, Nikola AU - Bobić, Jelena AU - Stojanovic, Biljana PY - 2019 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/2475 AB - Multiferroic composites with formula Ba(Ti0.95Zr0.5)O3–Ni0.7Zn0.3Fe2O4/ CoFe2O4/Ni0.7Cu0.01Sm0.05Zn0.29Fe1.95O4 (BTZ(95-5)–NZF/CF/NCSZF) were prepared by mixing chemically obtained NZF, CF, NCSZF and BTZ(95-5) powders in the planetary mill for 24 h. All powders were prepared by the auto-combustion method starting from metal nitrates, titanium(IV) isopropoxide, zirconium(IV) oxynitrate and citric acid solution. Citric acid was added as a fuel and also as a complexing agent [1]. The optimization of sintering process was performed and the powders were pressed and sintered at 1250 °C for 4 h. X-ray measurements of obtained composites confirmed the presence of NZF, CF, NCSZF, BTZ(95-5) phases without the presence of any intermediate phases or impurities. Impendence analysis of all investigated samples has shown two semicircular arcs due to the presence of different relaxation processes that originated from the grain and grain boundary contributions. The results of polarization vs. electric field measurements have shown the influence of magnetic phases type and concentration on the ferroelectric properties of the composites. Due to high conductivity of ferrite phases and presence of interfacial polarization, the shapes of these curves differed from the conventional ferroelectric materials [2]. The values of remnant polarization were: 0.72, 0.34, 0.013 μC/cm2 for the composites BTZ(95-5)-NZF, BTZ(95-5)-CF, BTZ(95-5)-NCSZF, respectively and for the saturation polarization were 1.2, 0.6 and 0.023 μC/cm2. In comparison with BTZ(95-5) this values are lower, Pr = 1.1 μC/cm2 and Ps = 4.5. However, due to the existence of non-saturated ferroelectric loops, the comparison of Pr and Ps was done at the appropriate field strength. PB - Institute for Multidisciplinary Research, University of Belgrade Kneza Višeslava 1, 11000 Belgrade, Serbia C3 - 5th Conference of The Serbian Society for Ceramic Materials T1 - PROPERTIES OF VARIOUS MULTIFERROICS PREPARED BY MIXING METHOD UR - https://hdl.handle.net/21.15107/rcub_rimsi_2475 ER -
@conference{ author = "Džunuzović, Adis and Vijatović Petrović, Mirjana and Ilić, Nikola and Bobić, Jelena and Stojanovic, Biljana", year = "2019", abstract = "Multiferroic composites with formula Ba(Ti0.95Zr0.5)O3–Ni0.7Zn0.3Fe2O4/ CoFe2O4/Ni0.7Cu0.01Sm0.05Zn0.29Fe1.95O4 (BTZ(95-5)–NZF/CF/NCSZF) were prepared by mixing chemically obtained NZF, CF, NCSZF and BTZ(95-5) powders in the planetary mill for 24 h. All powders were prepared by the auto-combustion method starting from metal nitrates, titanium(IV) isopropoxide, zirconium(IV) oxynitrate and citric acid solution. Citric acid was added as a fuel and also as a complexing agent [1]. The optimization of sintering process was performed and the powders were pressed and sintered at 1250 °C for 4 h. X-ray measurements of obtained composites confirmed the presence of NZF, CF, NCSZF, BTZ(95-5) phases without the presence of any intermediate phases or impurities. Impendence analysis of all investigated samples has shown two semicircular arcs due to the presence of different relaxation processes that originated from the grain and grain boundary contributions. The results of polarization vs. electric field measurements have shown the influence of magnetic phases type and concentration on the ferroelectric properties of the composites. Due to high conductivity of ferrite phases and presence of interfacial polarization, the shapes of these curves differed from the conventional ferroelectric materials [2]. The values of remnant polarization were: 0.72, 0.34, 0.013 μC/cm2 for the composites BTZ(95-5)-NZF, BTZ(95-5)-CF, BTZ(95-5)-NCSZF, respectively and for the saturation polarization were 1.2, 0.6 and 0.023 μC/cm2. In comparison with BTZ(95-5) this values are lower, Pr = 1.1 μC/cm2 and Ps = 4.5. However, due to the existence of non-saturated ferroelectric loops, the comparison of Pr and Ps was done at the appropriate field strength.", publisher = "Institute for Multidisciplinary Research, University of Belgrade Kneza Višeslava 1, 11000 Belgrade, Serbia", journal = "5th Conference of The Serbian Society for Ceramic Materials", title = "PROPERTIES OF VARIOUS MULTIFERROICS PREPARED BY MIXING METHOD", url = "https://hdl.handle.net/21.15107/rcub_rimsi_2475" }
Džunuzović, A., Vijatović Petrović, M., Ilić, N., Bobić, J.,& Stojanovic, B.. (2019). PROPERTIES OF VARIOUS MULTIFERROICS PREPARED BY MIXING METHOD. in 5th Conference of The Serbian Society for Ceramic Materials Institute for Multidisciplinary Research, University of Belgrade Kneza Višeslava 1, 11000 Belgrade, Serbia.. https://hdl.handle.net/21.15107/rcub_rimsi_2475
Džunuzović A, Vijatović Petrović M, Ilić N, Bobić J, Stojanovic B. PROPERTIES OF VARIOUS MULTIFERROICS PREPARED BY MIXING METHOD. in 5th Conference of The Serbian Society for Ceramic Materials. 2019;. https://hdl.handle.net/21.15107/rcub_rimsi_2475 .
Džunuzović, Adis, Vijatović Petrović, Mirjana, Ilić, Nikola, Bobić, Jelena, Stojanovic, Biljana, "PROPERTIES OF VARIOUS MULTIFERROICS PREPARED BY MIXING METHOD" in 5th Conference of The Serbian Society for Ceramic Materials (2019), https://hdl.handle.net/21.15107/rcub_rimsi_2475 .