Origin of large electrostrain in Sn4+ doped Ba(Zr0.2Ti0.8)O3-x(Ba0.7Ca0.3)TiO3 ceramics

Zhen Liu; Ruihao Yuan; Dezhen Xue; Wenwu Cao; Turab Lookman

doi:10.1016/j.actamat.2018.07.004

Origin of large electrostrain in Sn⁴⁺ doped Ba(Zr_0.2Ti_0.8)O₃-x(Ba_0.7Ca_0.3)TiO₃ ceramics

Zhen Liu
, Ruihao Yuan
, Dezhen Xue
, Wenwu Cao
, Turab Lookman

材料科学与工程学院

Los Alamos National Laboratory Theoretical Division
Harbin Institute of Technology
Xi'an Jiaotong University
Pennsylvania State University

科研成果: 期刊稿件 › 文章 › 同行评审

32 引用（Scopus）

摘要

A relatively large bipolar strain of 0.23% was recently reported in 3% Sn⁴⁺ doped (BaTi_0.8Zr_0.2)O₃-x (Ba_0.7Ca_0.3)TiO₃ (BZT-xBCT) ceramics under a field of 20 kV/cm. This strain is 53% higher than that in BZT-50BCT (0.15% at 20 kV/cm). To systematically study the mechanism and origin of the large electrostrain enhancement in Sn⁴⁺ doped BZT-53.3BCT, we develop a parameterized Landau free energy model and perform phase field simulations. Our results indicate that the softening of the elastic modulus C^′=C₁₁−C₁₂ accompanied by the reduction of anisotropy energy due to the 3% Sn⁴⁺ doping is primarily responsible for the large electrostrain enhancement.

源语言	英语
页（从-至）	155-164
页数	10
期刊	Acta Materialia
卷	157
DOI	https://doi.org/10.1016/j.actamat.2018.07.004
出版状态	已出版 - 15 9月 2018

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10.1016/j.actamat.2018.07.004

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@article{d86f53ffd69e49adb9ca6cb9e72f3ca0,

title = "Origin of large electrostrain in Sn4+ doped Ba(Zr0.2Ti0.8)O3-x(Ba0.7Ca0.3)TiO3 ceramics",

abstract = "A relatively large bipolar strain of 0.23\% was recently reported in 3\% Sn4+ doped (BaTi0.8Zr0.2)O3-x (Ba0.7Ca0.3)TiO3 (BZT-xBCT) ceramics under a field of 20 kV/cm. This strain is 53\% higher than that in BZT-50BCT (0.15\% at 20 kV/cm). To systematically study the mechanism and origin of the large electrostrain enhancement in Sn4+ doped BZT-53.3BCT, we develop a parameterized Landau free energy model and perform phase field simulations. Our results indicate that the softening of the elastic modulus C′=C11−C12 accompanied by the reduction of anisotropy energy due to the 3\% Sn4+ doping is primarily responsible for the large electrostrain enhancement.",

keywords = "BZT-xBCT, High electrostrain, Landau parameters, Phase field simulation, Sn doped",

author = "Zhen Liu and Ruihao Yuan and Dezhen Xue and Wenwu Cao and Turab Lookman",

note = "Publisher Copyright: {\textcopyright} 2018 Acta Materialia Inc.",

year = "2018",

month = sep,

day = "15",

doi = "10.1016/j.actamat.2018.07.004",

language = "英语",

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TY - JOUR

T1 - Origin of large electrostrain in Sn4+ doped Ba(Zr0.2Ti0.8)O3-x(Ba0.7Ca0.3)TiO3 ceramics

AU - Liu, Zhen

AU - Yuan, Ruihao

AU - Xue, Dezhen

AU - Cao, Wenwu

AU - Lookman, Turab

PY - 2018/9/15

Y1 - 2018/9/15

N2 - A relatively large bipolar strain of 0.23% was recently reported in 3% Sn4+ doped (BaTi0.8Zr0.2)O3-x (Ba0.7Ca0.3)TiO3 (BZT-xBCT) ceramics under a field of 20 kV/cm. This strain is 53% higher than that in BZT-50BCT (0.15% at 20 kV/cm). To systematically study the mechanism and origin of the large electrostrain enhancement in Sn4+ doped BZT-53.3BCT, we develop a parameterized Landau free energy model and perform phase field simulations. Our results indicate that the softening of the elastic modulus C′=C11−C12 accompanied by the reduction of anisotropy energy due to the 3% Sn4+ doping is primarily responsible for the large electrostrain enhancement.

AB - A relatively large bipolar strain of 0.23% was recently reported in 3% Sn4+ doped (BaTi0.8Zr0.2)O3-x (Ba0.7Ca0.3)TiO3 (BZT-xBCT) ceramics under a field of 20 kV/cm. This strain is 53% higher than that in BZT-50BCT (0.15% at 20 kV/cm). To systematically study the mechanism and origin of the large electrostrain enhancement in Sn4+ doped BZT-53.3BCT, we develop a parameterized Landau free energy model and perform phase field simulations. Our results indicate that the softening of the elastic modulus C′=C11−C12 accompanied by the reduction of anisotropy energy due to the 3% Sn4+ doping is primarily responsible for the large electrostrain enhancement.

KW - BZT-xBCT

KW - High electrostrain

KW - Landau parameters

KW - Phase field simulation

KW - Sn doped

UR - https://www.scopus.com/pages/publications/85050085166

U2 - 10.1016/j.actamat.2018.07.004

DO - 10.1016/j.actamat.2018.07.004

M3 - 文章

AN - SCOPUS:85050085166

SN - 1359-6454

VL - 157

SP - 155

EP - 164

JO - Acta Materialia

JF - Acta Materialia

ER -

Origin of large electrostrain in Sn4+ doped Ba(Zr0.2Ti0.8)O3-x(Ba0.7Ca0.3)TiO3 ceramics

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Origin of large electrostrain in Sn⁴⁺ doped Ba(Zr_0.2Ti_0.8)O₃-x(Ba_0.7Ca_0.3)TiO₃ ceramics