MULTIFERROIC COMPOSITES BaTiO3-Ni0.7Zn0.29Cu0.01Fe1.95Sm0.05O4
Аутори
Vijatović Petrović, MirjanaDžunuzović, Adis
Bobić, Jelena
Ilić, Nikola
Stojanović, Biljana D
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Multiferroics are a class of multifunctional materials (a single phase or
multiphase/composite materials) characterized by the coexistence of at least two
ferroic orders (ferroelectric, ferromagnetic, or ferroelastic). Numerous multiferroics
are being developed during the years of intensive research. As compounds with
good ferroelectric and piezoelectric properties, barium titanate based materials are
usually used as a constituent of these composites and nickel ferrite based materials
as a constituent with magnetic properties [1].
The nickel ferrite combines wide range of useful magnetic properties with
relatively low electrical conductivity and high value of magnetization. In order to
improve electrical and magnetic properties of this material it is usually doped with
Jahn-Teller ions such as zinc, manganese or copper [1,2].
Composite ceramics prepared by mixing barium titanate (BT) and nickel zinc
(NZF) ferrite doped with Cu and Sm in different mass ratios, BT-NZCSF/70-30...,
BT-NZCSF/80-20 and BT-NZCSF/90-10 were sintered at 1080 °C for 4 h. The
formation of barium titanate tetragonal crystal structure and nickel zinc ferrite cubic
spinel structure was identified. Polygonal grains of both constituents were
homogeneously distributed in the ceramic samples. Ferroelectric hysteresis loops
were roundish and not typical for classical ferroelectric material due to high
conductivity of ferrite phase in the materials. The composition with the highest
concentration of BT possessed the lowest value of leakage current density.
Impedance spectroscopy analysis has shown that total resistivity of the BTNZCSF/
70-30 composition is the lowest due to the highest concentration of
conductive ferrite phase in the system. Temperature dependence of the grain and
grain boundary conductivity was analyzed using the Arrhenius equation. The
activation energies were approximately from 0.2 eV up to 0.5 eV, suggesting the
mechanism of polaronic conduction of both, n and p types. When investigated
materials were placed in the humid atmosphere, the fastest change in resistivity was
noticed in the composite material with the highest concentration of barium titanate.
Кључне речи:
Multiferroics / ferroelectric / Composite ceramics / activation energiesИзвор:
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 - Vijatović Petrović, Mirjana AU - Džunuzović, Adis AU - Bobić, Jelena AU - Ilić, Nikola AU - Stojanović, Biljana D PY - 2019 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/2485 AB - Multiferroics are a class of multifunctional materials (a single phase or multiphase/composite materials) characterized by the coexistence of at least two ferroic orders (ferroelectric, ferromagnetic, or ferroelastic). Numerous multiferroics are being developed during the years of intensive research. As compounds with good ferroelectric and piezoelectric properties, barium titanate based materials are usually used as a constituent of these composites and nickel ferrite based materials as a constituent with magnetic properties [1]. The nickel ferrite combines wide range of useful magnetic properties with relatively low electrical conductivity and high value of magnetization. In order to improve electrical and magnetic properties of this material it is usually doped with Jahn-Teller ions such as zinc, manganese or copper [1,2]. Composite ceramics prepared by mixing barium titanate (BT) and nickel zinc (NZF) ferrite doped with Cu and Sm in different mass ratios, BT-NZCSF/70-30, BT-NZCSF/80-20 and BT-NZCSF/90-10 were sintered at 1080 °C for 4 h. The formation of barium titanate tetragonal crystal structure and nickel zinc ferrite cubic spinel structure was identified. Polygonal grains of both constituents were homogeneously distributed in the ceramic samples. Ferroelectric hysteresis loops were roundish and not typical for classical ferroelectric material due to high conductivity of ferrite phase in the materials. The composition with the highest concentration of BT possessed the lowest value of leakage current density. Impedance spectroscopy analysis has shown that total resistivity of the BTNZCSF/ 70-30 composition is the lowest due to the highest concentration of conductive ferrite phase in the system. Temperature dependence of the grain and grain boundary conductivity was analyzed using the Arrhenius equation. The activation energies were approximately from 0.2 eV up to 0.5 eV, suggesting the mechanism of polaronic conduction of both, n and p types. When investigated materials were placed in the humid atmosphere, the fastest change in resistivity was noticed in the composite material with the highest concentration of barium titanate. 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 - MULTIFERROIC COMPOSITES BaTiO3-Ni0.7Zn0.29Cu0.01Fe1.95Sm0.05O4 UR - https://hdl.handle.net/21.15107/rcub_rimsi_2485 ER -
@conference{ author = "Vijatović Petrović, Mirjana and Džunuzović, Adis and Bobić, Jelena and Ilić, Nikola and Stojanović, Biljana D", year = "2019", abstract = "Multiferroics are a class of multifunctional materials (a single phase or multiphase/composite materials) characterized by the coexistence of at least two ferroic orders (ferroelectric, ferromagnetic, or ferroelastic). Numerous multiferroics are being developed during the years of intensive research. As compounds with good ferroelectric and piezoelectric properties, barium titanate based materials are usually used as a constituent of these composites and nickel ferrite based materials as a constituent with magnetic properties [1]. The nickel ferrite combines wide range of useful magnetic properties with relatively low electrical conductivity and high value of magnetization. In order to improve electrical and magnetic properties of this material it is usually doped with Jahn-Teller ions such as zinc, manganese or copper [1,2]. Composite ceramics prepared by mixing barium titanate (BT) and nickel zinc (NZF) ferrite doped with Cu and Sm in different mass ratios, BT-NZCSF/70-30, BT-NZCSF/80-20 and BT-NZCSF/90-10 were sintered at 1080 °C for 4 h. The formation of barium titanate tetragonal crystal structure and nickel zinc ferrite cubic spinel structure was identified. Polygonal grains of both constituents were homogeneously distributed in the ceramic samples. Ferroelectric hysteresis loops were roundish and not typical for classical ferroelectric material due to high conductivity of ferrite phase in the materials. The composition with the highest concentration of BT possessed the lowest value of leakage current density. Impedance spectroscopy analysis has shown that total resistivity of the BTNZCSF/ 70-30 composition is the lowest due to the highest concentration of conductive ferrite phase in the system. Temperature dependence of the grain and grain boundary conductivity was analyzed using the Arrhenius equation. The activation energies were approximately from 0.2 eV up to 0.5 eV, suggesting the mechanism of polaronic conduction of both, n and p types. When investigated materials were placed in the humid atmosphere, the fastest change in resistivity was noticed in the composite material with the highest concentration of barium titanate.", 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 = "MULTIFERROIC COMPOSITES BaTiO3-Ni0.7Zn0.29Cu0.01Fe1.95Sm0.05O4", url = "https://hdl.handle.net/21.15107/rcub_rimsi_2485" }
Vijatović Petrović, M., Džunuzović, A., Bobić, J., Ilić, N.,& Stojanović, B. D.. (2019). MULTIFERROIC COMPOSITES BaTiO3-Ni0.7Zn0.29Cu0.01Fe1.95Sm0.05O4. 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_2485
Vijatović Petrović M, Džunuzović A, Bobić J, Ilić N, Stojanović BD. MULTIFERROIC COMPOSITES BaTiO3-Ni0.7Zn0.29Cu0.01Fe1.95Sm0.05O4. in 5th Conference of The Serbian Society for Ceramic Materials. 2019;. https://hdl.handle.net/21.15107/rcub_rimsi_2485 .
Vijatović Petrović, Mirjana, Džunuzović, Adis, Bobić, Jelena, Ilić, Nikola, Stojanović, Biljana D, "MULTIFERROIC COMPOSITES BaTiO3-Ni0.7Zn0.29Cu0.01Fe1.95Sm0.05O4" in 5th Conference of The Serbian Society for Ceramic Materials (2019), https://hdl.handle.net/21.15107/rcub_rimsi_2485 .