Freezing of dipole dynamics in relaxor ferroelectric Pb(Mg1/3Nb2/3)O3-PbTiO3 as evidenced by dielectric spectroscopy

A. A. Bokov; Z. G. Ye

doi:10.1088/0953-8984/12/34/101

Freezing of dipole dynamics in relaxor ferroelectric Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃ as evidenced by dielectric spectroscopy

A. A. Bokov
, Z. G. Ye

Simon Fraser University

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

52 Scopus citations

Abstract

Complex dielectric susceptibility (χ′ + jχ″) has been studied at f = 10^-2-10⁵ Hz in the relaxor ferroelectric 0.75Pb(Mg_1/3Nb_2/3)O₃-0.25PbTiO₃. In addition to the well known relaxor dispersion observed at temperatures around and below the temperature of permittivity maximum T_m, a new and comparatively weak dispersion has been disclosed at T > T_m. It is described by the 'universal relaxation law', χ″ = cot(nπ/2)χ′ ∞ f^n-1. The temperature dependence of the exponent n follows the Vogel-Fulcher relation, indicating a process of freezing into the nonergodic state.

Original language	English
Pages (from-to)	L541-L548
Journal	Journal of Physics Condensed Matter
Volume	12
Issue number	34
DOIs	https://doi.org/10.1088/0953-8984/12/34/101
State	Published - 28 Aug 2000
Externally published	Yes

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title = "Freezing of dipole dynamics in relaxor ferroelectric Pb(Mg1/3Nb2/3)O3-PbTiO3 as evidenced by dielectric spectroscopy",

abstract = "Complex dielectric susceptibility (χ′ + jχ″) has been studied at f = 10-2-105 Hz in the relaxor ferroelectric 0.75Pb(Mg1/3Nb2/3)O3-0.25PbTiO3. In addition to the well known relaxor dispersion observed at temperatures around and below the temperature of permittivity maximum Tm, a new and comparatively weak dispersion has been disclosed at T > Tm. It is described by the 'universal relaxation law', χ″ = cot(nπ/2)χ′ ∞ fn-1. The temperature dependence of the exponent n follows the Vogel-Fulcher relation, indicating a process of freezing into the nonergodic state.",

author = "Bokov, \{A. A.\} and Ye, \{Z. G.\}",

year = "2000",

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doi = "10.1088/0953-8984/12/34/101",

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T1 - Freezing of dipole dynamics in relaxor ferroelectric Pb(Mg1/3Nb2/3)O3-PbTiO3 as evidenced by dielectric spectroscopy

AU - Bokov, A. A.

AU - Ye, Z. G.

PY - 2000/8/28

Y1 - 2000/8/28

N2 - Complex dielectric susceptibility (χ′ + jχ″) has been studied at f = 10-2-105 Hz in the relaxor ferroelectric 0.75Pb(Mg1/3Nb2/3)O3-0.25PbTiO3. In addition to the well known relaxor dispersion observed at temperatures around and below the temperature of permittivity maximum Tm, a new and comparatively weak dispersion has been disclosed at T > Tm. It is described by the 'universal relaxation law', χ″ = cot(nπ/2)χ′ ∞ fn-1. The temperature dependence of the exponent n follows the Vogel-Fulcher relation, indicating a process of freezing into the nonergodic state.

AB - Complex dielectric susceptibility (χ′ + jχ″) has been studied at f = 10-2-105 Hz in the relaxor ferroelectric 0.75Pb(Mg1/3Nb2/3)O3-0.25PbTiO3. In addition to the well known relaxor dispersion observed at temperatures around and below the temperature of permittivity maximum Tm, a new and comparatively weak dispersion has been disclosed at T > Tm. It is described by the 'universal relaxation law', χ″ = cot(nπ/2)χ′ ∞ fn-1. The temperature dependence of the exponent n follows the Vogel-Fulcher relation, indicating a process of freezing into the nonergodic state.

UR - https://www.scopus.com/pages/publications/0034726213

U2 - 10.1088/0953-8984/12/34/101

DO - 10.1088/0953-8984/12/34/101

M3 - 文章

AN - SCOPUS:0034726213

SN - 0953-8984

VL - 12

SP - L541-L548

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 34

ER -

Freezing of dipole dynamics in relaxor ferroelectric Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃ as evidenced by dielectric spectroscopy

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