Oxygen vacancy-induced aging of Mn-doped Ba0.8Sr0.2TiO3 ceramics in paraelectric and ferroelectric state

Zhuo Li; Huiqing Fan

doi:10.1016/j.ssi.2009.06.008

Oxygen vacancy-induced aging of Mn-doped Ba_0.8Sr_0.2TiO₃ ceramics in paraelectric and ferroelectric state

Zhuo Li, Huiqing Fan

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

14 Scopus citations

Abstract

The aging properties of 0.01 mol% Mn-doped Ba_0.8Sr_0.2TiO₃ ceramics have been investigated from 30 °C to 400 °C at various frequencies. Decreases in ε′(T) of the aged sample compared to the fresh one around the tetragonal-cubic transition and in the regime of diffusion have been observed. The activation energy E_a = 1.25 eV obtained from the J-T loop at zero electric field indicates that oxygen vacancies dominate in the aging. The symmetry-conforming principle of point defects was employed to explain the time and temperature dependence of aging in the dielectric constant and double/constricted P-E loops of the samples aged in the paraelectric and ferroelectric state.

Original language	English
Pages (from-to)	1139-1142
Number of pages	4
Journal	Solid State Ionics
Volume	180
Issue number	20-22
DOIs	https://doi.org/10.1016/j.ssi.2009.06.008
State	Published - 17 Aug 2009

Keywords

Aging
Dielectric
Oxygen vacancies
Symmetry-conforming principle of point defects
Thermally stimulated current

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10.1016/j.ssi.2009.06.008

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title = "Oxygen vacancy-induced aging of Mn-doped Ba0.8Sr0.2TiO3 ceramics in paraelectric and ferroelectric state",

abstract = "The aging properties of 0.01 mol% Mn-doped Ba0.8Sr0.2TiO3 ceramics have been investigated from 30 °C to 400 °C at various frequencies. Decreases in ε′(T) of the aged sample compared to the fresh one around the tetragonal-cubic transition and in the regime of diffusion have been observed. The activation energy Ea = 1.25 eV obtained from the J-T loop at zero electric field indicates that oxygen vacancies dominate in the aging. The symmetry-conforming principle of point defects was employed to explain the time and temperature dependence of aging in the dielectric constant and double/constricted P-E loops of the samples aged in the paraelectric and ferroelectric state.",

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T1 - Oxygen vacancy-induced aging of Mn-doped Ba0.8Sr0.2TiO3 ceramics in paraelectric and ferroelectric state

AU - Li, Zhuo

AU - Fan, Huiqing

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Y1 - 2009/8/17

N2 - The aging properties of 0.01 mol% Mn-doped Ba0.8Sr0.2TiO3 ceramics have been investigated from 30 °C to 400 °C at various frequencies. Decreases in ε′(T) of the aged sample compared to the fresh one around the tetragonal-cubic transition and in the regime of diffusion have been observed. The activation energy Ea = 1.25 eV obtained from the J-T loop at zero electric field indicates that oxygen vacancies dominate in the aging. The symmetry-conforming principle of point defects was employed to explain the time and temperature dependence of aging in the dielectric constant and double/constricted P-E loops of the samples aged in the paraelectric and ferroelectric state.

AB - The aging properties of 0.01 mol% Mn-doped Ba0.8Sr0.2TiO3 ceramics have been investigated from 30 °C to 400 °C at various frequencies. Decreases in ε′(T) of the aged sample compared to the fresh one around the tetragonal-cubic transition and in the regime of diffusion have been observed. The activation energy Ea = 1.25 eV obtained from the J-T loop at zero electric field indicates that oxygen vacancies dominate in the aging. The symmetry-conforming principle of point defects was employed to explain the time and temperature dependence of aging in the dielectric constant and double/constricted P-E loops of the samples aged in the paraelectric and ferroelectric state.

KW - Aging

KW - Dielectric

KW - Oxygen vacancies

KW - Symmetry-conforming principle of point defects

KW - Thermally stimulated current

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M3 - 文章

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SN - 0167-2738

VL - 180

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JO - Solid State Ionics

JF - Solid State Ionics

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ER -

Oxygen vacancy-induced aging of Mn-doped Ba_0.8Sr_0.2TiO₃ ceramics in paraelectric and ferroelectric state

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Keywords

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