Misfit strain-misfit strain phase diagram of (110)- oriented ferroelectric PbTiO3 3 films: a phase-field

被引：0

作者：

Li, Hui-Mei ^{[1
,2
]}

Zhang, Heng ^{[1
]}

Wang, Yu-Jia ^{[1
]}

Tang, Yun-Long ^{[1
]}

Zhu, Yin-Lian

Ma, Xiu-Liang ^{[3
,4
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China

[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China

[3] Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China

[4] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

来源：

MICROSTRUCTURES | 2024年 / 4卷 / 01期

基金：

中国国家自然科学基金;

关键词：

(110)-oriented PbTiO3 3 film; phase-field simulation; anisotropic misfit strains; phase diagram; domain structures; THIN-FILMS; EVOLUTION; STABILITY;

D O I：

10.20517/microstructures.2023.53

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ferroelectric thin films with high index orientations are found to possess unique structures and properties. In this work, we constructed the misfit strain-misfit strain phase diagram of (110)-oriented PbTiO3 3 (PTO) thin films by phase-field simulations. The evolutions of ferroelectric phase structures, domain morphologies, volume fractions, and polarization components with the anisotropic strains were analyzed in detail. Large anisotropic strains exist between the orthorhombic scandate substrates and (110)-oriented PTO films, which makes it possible to engineer the structures and properties by anisotropic strain. These results deepen the understanding of ferroelectric domain structures of (110)-oriented PTO films under the anisotropic strain and provide theoretical support for the anisotropic strain engineering of high-index thin films experimentally.

引用

页数：14

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