Dielectric and magnetic properties of BaTiO3 –NiFe2O4 multiferroic composites

Grigalaitis, R.; Petrović, M.M. Vijatović; Bobić, J.D.; Dzunuzovic, A.; Sobiestianskas, R.; Brilingas, A.; Stojanović, B. D.; Banys, J.

doi:10.1016/j.ceramint.2013.11.069

Cited by 100 publications

(34 citation statements)

References 28 publications

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“…These dopants induce local random fields which may act as precursors for the formation of polar nano regions as it was explained in the literature [23]. By approaching the room temperature these polar nano regions grow in size and one can see the relaxor-to-ferroelectric transformation similar to that in Pb(Sc 1/2 Nb 1/2 )O 3 [24] or Sr 0.61 Ba 0.39 Nb 2 O 6 :Co [25] relaxors and this is supported by the maximum of the dielectric permittivity and the room temperature XRD measurements [8]. Assuming that these phenomena are valid in our case, the softening of a relaxational mode to …”

Section: Dielectric Studiesmentioning

confidence: 55%

“…2. As it was already determined in our previous publication [8] at low frequencies the electrical conductivity dominates in dielectric spectra at above room temperature. A dielectric dispersion, not related to the above mentioned electrical charge migration processes, appears at higher frequencies.…”

Section: Dielectric Studiesmentioning

confidence: 59%

“…4. A dielectric dispersion in low frequency part is governed by electrical charge migration processes which were analyzed in detail in our previous publication [8]. In the frequency region between 1 MHz and 10 GHz dielectric curves show a nearly non dispersive behaviour at all investigated temperatures.…”

Section: Dielectric Studiesmentioning

confidence: 99%

“…This so-called ''product property'' was successfully applied to the synthesis of multiferroic composites consisting of selfassembled nanostructures with ferromagnetic nanoparticles or nanopillars embedded in a ferroelectric matrix or vice versa. The fabrication of such an artificial multiferroic, formed by use of CoFe 2 O 4 , NiFe 2 O 4 , Ni 0.5 Zn 0.5 Fe 2 O 4 , CuFe 2 O 4 , ZnFe 2 O 4 and other ferromagnetic and BT or PZT, has been reported [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…Powders were pressed into circular discs with the thickness of about 1.5 mm and the diameter of 8 mm using a uniaxial press (*196 MPa). Pellets were sintered in the air atmosphere at 1170°C for 4 h. More details about the preparation methodology can be found in our previous publication [8].…”

Section: Introductionmentioning

confidence: 99%

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Broadband dielectric and Mössbauer studies of BaTiO3–NiFe2O4 composite multiferroics

Grigalaitis

Petrović

Baltrūnas

et al. 2015

J Mater Sci: Mater Electron

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A broadband dielectric investigation and Mössbauer 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 Mössbauer 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 BaTiO 3 lattice or at the interfaces between BaTiO 3 and NiFe 2 O 4 .

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Section: Dielectric Studiesmentioning

confidence: 55%

Section: Dielectric Studiesmentioning

confidence: 59%

Section: Dielectric Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Broadband dielectric and Mössbauer studies of BaTiO3–NiFe2O4 composite multiferroics

Grigalaitis

Petrović

Baltrūnas

et al. 2015

J Mater Sci: Mater Electron

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Crystal Structure, Magnetic, and Dielectric Properties of (x)CoFe₂O₄–(1−x)Ba_0.8Sr_0.2TiO₃ Multiferroics

Shukla

Mallick

Kumari

et al. 2023

Physica Status Solidi (b)

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The composites (x)CoFe2O4‐(1‐x)Ba0.8Sr0.2TiO3 were prepared by solid state reaction method using microwave double‐step sintering. Ba0.8Sr0.2TiO3 crystalized to tetragonal crystal symmetry with P4mm space group and, CoFe2O4 crystalized to cubic crystal symmetry with F d3̅𝑚 space group. Electron microscopy techniques were used to understand the microstructure, elemental composition, and morphology of the composites. The dielectric properties were measured in the 1Hz‐1MHz frequency range and, 400C‐4000C temperature range. Composite with × = 0.1 (ε’∽170, tan δ=0.08 at 1kHz) and 0.2 (ε’∽390, tan δ=0.07 at 1 kHz) have better dielectric properties than the parent Ba0.8Sr0.2TiO3 ferroelectric (ε’∽125, tan δ=0.16 at 1kHz) and CoFe2O4 ferrimagnetic phases (ε’∽375, tan δ=0.72 at 1kHz), respectively. Composite with 10% cobalt ferrite has the highest saturation polarization (2.1 μC/cm2), highest remanent polarization (0.9 μC/cm2), and coercive field (23.9 kV/cm) compared to ferroelectric phase followed by × = 0.2 composite (P S = 1.6 μC/cm2, P r = 0.8 μC/cm2 & E C = 19.2 kV/cm). Composite with × = 0.2 show the highest magnetic coercive field of 1.96 kOe. Hence, this article advocates that 20% ferrite in the composites is the optimized composition for multiferroic applications. The present study will help explore piezoelectric, magnetostrictive, and magnetoelectric properties of (x)CoFe2O4‐(1‐x)Ba0.8Sr0.2TiO3 for the technological application.This article is protected by copyright. All rights reserved.

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A quantitative model based on an experimental study for the magnetoelectric coupling at the interface of cobalt ferrite–barium titanate nanocomposites

et al. 2017

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Dielectric and magnetic properties of BaTiO3 –NiFe2O4 multiferroic composites

Cited by 100 publications

References 28 publications

Broadband dielectric and Mössbauer studies of BaTiO3–NiFe2O4 composite multiferroics

Broadband dielectric and Mössbauer studies of BaTiO3–NiFe2O4 composite multiferroics

Crystal Structure, Magnetic, and Dielectric Properties of (x)CoFe₂O₄–(1−x)Ba_0.8Sr_0.2TiO₃ Multiferroics

A quantitative model based on an experimental study for the magnetoelectric coupling at the interface of cobalt ferrite–barium titanate nanocomposites

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Dielectric and magnetic properties of BaTiO3 –NiFe2O4 multiferroic composites

Cited by 100 publications

References 28 publications

Broadband dielectric and Mössbauer studies of BaTiO3–NiFe2O4 composite multiferroics

Broadband dielectric and Mössbauer studies of BaTiO3–NiFe2O4 composite multiferroics

Crystal Structure, Magnetic, and Dielectric Properties of (x)CoFe2O4–(1−x)Ba0.8Sr0.2TiO3 Multiferroics

A quantitative model based on an experimental study for the magnetoelectric coupling at the interface of cobalt ferrite–barium titanate nanocomposites

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Product

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Crystal Structure, Magnetic, and Dielectric Properties of (x)CoFe₂O₄–(1−x)Ba_0.8Sr_0.2TiO₃ Multiferroics