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

材料学院

Northwestern Polytechnical University Xian

科研成果: 期刊稿件 › 文章 › 同行评审

14 引用（Scopus）

摘要

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.

源语言	英语
页（从-至）	1139-1142
页数	4
期刊	Solid State Ionics
卷	180
期	20-22
DOI	https://doi.org/10.1016/j.ssi.2009.06.008
出版状态	已出版 - 17 8月 2009

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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.",

keywords = "Aging, Dielectric, Oxygen vacancies, Symmetry-conforming principle of point defects, Thermally stimulated current",

author = "Zhuo Li and Huiqing Fan",

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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

PY - 2009/8/17

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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DO - 10.1016/j.ssi.2009.06.008

M3 - 文章

AN - SCOPUS:67651174266

SN - 0167-2738

VL - 180

SP - 1139

EP - 1142

JO - Solid State Ionics

JF - Solid State Ionics

IS - 20-22

ER -

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

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