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

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

28 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	155-164
Number of pages	10
Journal	Acta Materialia
Volume	157
DOIs	https://doi.org/10.1016/j.actamat.2018.07.004
State	Published - Sep 15 2018

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Polymers and Plastics
Metals and Alloys

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10.1016/j.actamat.2018.07.004

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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.",

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

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year = "2018",

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

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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.

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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

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