Domain Engineering the Flexoelectric Response of BaTiO3-SrTiO3 Binary Films:A Phase Field Study

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外文摘要：The flexoelectric effect describes the interplay between material polarization and strain gradient.While much research has focused on control strategies for flexoelectricity,the impact of ferroelectric domain structure on the flexoelectric effect remains elusive.Through phase field simulations,we conduct a comparative study on the flexoelectric response of two types of BaTiO3-SrTiO3 binary films:BaTiO3-SrTiO3 multilayers and(Ba,Sr)TiO3 solid solutions.Our findings reveal that the flexoelectric response of these two systems,at the same Ba/Sr ratio,differs not only in magnitude but also in other aspects like temperature dependence,linearity,and hysteresis,due to their different ferroelectric domain structures and evolution dynamics.Our study deepens our current understanding of flexoelectricity in ferroelectrics and suggests"domain engineering"as a potential way to tailor this effect.

外文关键词：

FerroelectricFlexoelectricityMultilayersSolid solutionPhase field

作者：

Junyu Tao、Fan Zhang、Jianyuan Zhang、Weijin Chen、Yue Zheng

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作者单位：

School of Materials,Shenzhen Campus of Sun Yat-sen University,Shenzhen 518107,China

Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices,School of Physics,Sun Yat-sen University,Guangzhou 510275,China

State Key Laboratory of Optoelectronic Materials and Technologies,School of Physics,Sun Yat-sen University,Guangzhou 510275,China

Centre for Physical Mechanics and Biophysics,School of Physics,Sun Yat-sen University,Guangzhou 510275,China

Southern Marine Science and Engineering Guangdong

Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Zhuhai 519082,China

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基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaGuangdong Provincial Key Laboratory of Magnetoelectric Physics and DevicesShenzhen Science and Techonlogy ProgramShenzhen Science and Techonlogy ProgramSouthern Marine Science and Engineering Guangdong Laboratory(Zhuhai)

项目编号：

12222214121320202022B121201000820220619300000120220818181805001SML2021SP405

出版年：

2024

DOI：

10.1007/s10338-024-00471-x

固体力学学报(英文版)

中国力学学会

固体力学学报(英文版)

影响因子：0.214

ISSN：0894-9166

年,卷(期)：2024.37(4)