Maxwell-Wagner characterization of dielectric relaxation in Ni 0.8Zn0.2Fe2O4/Sr 0.5Ba0.5Nb2O6 composite

Y. J. Li; X. M. Chen; R. Z. Hou; Y. H. Tang

doi:10.1016/j.ssc.2005.11.017

Maxwell-Wagner characterization of dielectric relaxation in Ni _0.8Zn_0.2Fe₂O₄/Sr _0.5Ba_0.5Nb₂O₆ composite

Y. J. Li
, X. M. Chen
, R. Z. Hou
, Y. H. Tang

School of Electrical Engineering

Zhejiang University

Research output: Contribution to journal › Article › peer-review

97 Scopus citations

Abstract

Dense composites were prepared through incorporating the dispersed Ni _0.8Zn_0.2Fe₂O₄ ferromagnetic particles into Sr_0.5Ba_0.5Nb₂O₆ ferroelectric matrix. Extrinsic dielectric relaxation and associated high permittivities of the materials are reported in the composites. We used an ideal equivalent circuit to explain electrical responses in impedance formalism. A Debye-like relaxation in the permittivity formalism was also found. Interestingly, real permittivity (ε′) of the sample containing 30% Ni_0.8Zn_0.2Fe₂O₄ shows obvious independence of the temperature at 100 kHz. Dielectric relaxation and high-ε′ properties of the composites are explained in terms of the Maxwell-Wagner (MW) polarization model.

Original language	English
Pages (from-to)	120-125
Number of pages	6
Journal	Solid State Communications
Volume	137
Issue number	3
DOIs	https://doi.org/10.1016/j.ssc.2005.11.017
State	Published - Jan 2006

Keywords

A. Ferroelectrics
C. Grain boundary
D. Dielectric responses
D. Maxwell-Wagner polarization

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10.1016/j.ssc.2005.11.017

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title = "Maxwell-Wagner characterization of dielectric relaxation in Ni 0.8Zn0.2Fe2O4/Sr 0.5Ba0.5Nb2O6 composite",

abstract = "Dense composites were prepared through incorporating the dispersed Ni 0.8Zn0.2Fe2O4 ferromagnetic particles into Sr0.5Ba0.5Nb2O6 ferroelectric matrix. Extrinsic dielectric relaxation and associated high permittivities of the materials are reported in the composites. We used an ideal equivalent circuit to explain electrical responses in impedance formalism. A Debye-like relaxation in the permittivity formalism was also found. Interestingly, real permittivity (ε′) of the sample containing 30\% Ni0.8Zn0.2Fe2O4 shows obvious independence of the temperature at 100 kHz. Dielectric relaxation and high-ε′ properties of the composites are explained in terms of the Maxwell-Wagner (MW) polarization model.",

keywords = "A. Ferroelectrics, C. Grain boundary, D. Dielectric responses, D. Maxwell-Wagner polarization",

author = "Li, \{Y. J.\} and Chen, \{X. M.\} and Hou, \{R. Z.\} and Tang, \{Y. H.\}",

year = "2006",

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doi = "10.1016/j.ssc.2005.11.017",

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TY - JOUR

T1 - Maxwell-Wagner characterization of dielectric relaxation in Ni 0.8Zn0.2Fe2O4/Sr 0.5Ba0.5Nb2O6 composite

AU - Li, Y. J.

AU - Chen, X. M.

AU - Hou, R. Z.

AU - Tang, Y. H.

PY - 2006/1

Y1 - 2006/1

N2 - Dense composites were prepared through incorporating the dispersed Ni 0.8Zn0.2Fe2O4 ferromagnetic particles into Sr0.5Ba0.5Nb2O6 ferroelectric matrix. Extrinsic dielectric relaxation and associated high permittivities of the materials are reported in the composites. We used an ideal equivalent circuit to explain electrical responses in impedance formalism. A Debye-like relaxation in the permittivity formalism was also found. Interestingly, real permittivity (ε′) of the sample containing 30% Ni0.8Zn0.2Fe2O4 shows obvious independence of the temperature at 100 kHz. Dielectric relaxation and high-ε′ properties of the composites are explained in terms of the Maxwell-Wagner (MW) polarization model.

AB - Dense composites were prepared through incorporating the dispersed Ni 0.8Zn0.2Fe2O4 ferromagnetic particles into Sr0.5Ba0.5Nb2O6 ferroelectric matrix. Extrinsic dielectric relaxation and associated high permittivities of the materials are reported in the composites. We used an ideal equivalent circuit to explain electrical responses in impedance formalism. A Debye-like relaxation in the permittivity formalism was also found. Interestingly, real permittivity (ε′) of the sample containing 30% Ni0.8Zn0.2Fe2O4 shows obvious independence of the temperature at 100 kHz. Dielectric relaxation and high-ε′ properties of the composites are explained in terms of the Maxwell-Wagner (MW) polarization model.

KW - A. Ferroelectrics

KW - C. Grain boundary

KW - D. Dielectric responses

KW - D. Maxwell-Wagner polarization

UR - https://www.scopus.com/pages/publications/29144443717

U2 - 10.1016/j.ssc.2005.11.017

DO - 10.1016/j.ssc.2005.11.017

M3 - 文章

AN - SCOPUS:29144443717

SN - 0038-1098

VL - 137

SP - 120

EP - 125

JO - Solid State Communications

JF - Solid State Communications

IS - 3

ER -

Maxwell-Wagner characterization of dielectric relaxation in Ni _0.8Zn_0.2Fe₂O₄/Sr _0.5Ba_0.5Nb₂O₆ composite

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