Dielectric dispersion and critical behavior in relaxor ferroelectric Pb(Mg1/3Nb2/3)O3-PbTiO3

A. A. Bokov; Z. G. Ye

doi:10.1063/1.1310629

Dielectric dispersion and critical behavior in relaxor ferroelectric Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃

A. A. Bokov
, Z. G. Ye

Simon Fraser University

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

88 Scopus citations

Abstract

A critical behavior of dielectric susceptibility has been discovered in relaxor ferroelectric 0.75Pb(Mg_1/3Nb_2/3)O₃-0.25PbTiO₃. The real part of permittivity ε′ was found to follow the relation ε′ - ε_x = χ′ ∝ (T-T₀)^-2 at T>T₀, and ε′ ∝ (T_c-T)^-1 at T<T_c, where T₀≈T_c<T_m; T_m is the temperature of the diffused ε′(T) maximum as is typical of relaxors; ε_x is the frequency-independent parameter, and x′ is the susceptibility depending on frequency via the "universal" relaxation law χ′ ∝ f^n-1 The susceptibility χ′ is suggested to originate from the polarization of polar nanoclusters.

Original language	English
Pages (from-to)	1888-1890
Number of pages	3
Journal	Applied Physics Letters
Volume	77
Issue number	12
DOIs	https://doi.org/10.1063/1.1310629
State	Published - 18 Sep 2000
Externally published	Yes

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title = "Dielectric dispersion and critical behavior in relaxor ferroelectric Pb(Mg1/3Nb2/3)O3-PbTiO3",

abstract = "A critical behavior of dielectric susceptibility has been discovered in relaxor ferroelectric 0.75Pb(Mg1/3Nb2/3)O3-0.25PbTiO3. The real part of permittivity ε′ was found to follow the relation ε′ - εx = χ′ ∝ (T-T0)-2 at T>T0, and ε′ ∝ (Tc-T)-1 at Tc, where T0≈Tcm; Tm is the temperature of the diffused ε′(T) maximum as is typical of relaxors; εx is the frequency-independent parameter, and x′ is the susceptibility depending on frequency via the {"}universal{"} relaxation law χ′ ∝ fn-1 The susceptibility χ′ is suggested to originate from the polarization of polar nanoclusters.",

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T1 - Dielectric dispersion and critical behavior in relaxor ferroelectric Pb(Mg1/3Nb2/3)O3-PbTiO3

AU - Bokov, A. A.

AU - Ye, Z. G.

PY - 2000/9/18

Y1 - 2000/9/18

N2 - A critical behavior of dielectric susceptibility has been discovered in relaxor ferroelectric 0.75Pb(Mg1/3Nb2/3)O3-0.25PbTiO3. The real part of permittivity ε′ was found to follow the relation ε′ - εx = χ′ ∝ (T-T0)-2 at T>T0, and ε′ ∝ (Tc-T)-1 at Tc, where T0≈Tcm; Tm is the temperature of the diffused ε′(T) maximum as is typical of relaxors; εx is the frequency-independent parameter, and x′ is the susceptibility depending on frequency via the "universal" relaxation law χ′ ∝ fn-1 The susceptibility χ′ is suggested to originate from the polarization of polar nanoclusters.

AB - A critical behavior of dielectric susceptibility has been discovered in relaxor ferroelectric 0.75Pb(Mg1/3Nb2/3)O3-0.25PbTiO3. The real part of permittivity ε′ was found to follow the relation ε′ - εx = χ′ ∝ (T-T0)-2 at T>T0, and ε′ ∝ (Tc-T)-1 at Tc, where T0≈Tcm; Tm is the temperature of the diffused ε′(T) maximum as is typical of relaxors; εx is the frequency-independent parameter, and x′ is the susceptibility depending on frequency via the "universal" relaxation law χ′ ∝ fn-1 The susceptibility χ′ is suggested to originate from the polarization of polar nanoclusters.

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U2 - 10.1063/1.1310629

DO - 10.1063/1.1310629

M3 - 文章

AN - SCOPUS:0001380244

SN - 0003-6951

VL - 77

SP - 1888

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 12

ER -

Dielectric dispersion and critical behavior in relaxor ferroelectric Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃

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