Strain-induced phase transitions in multiferroic BiFeO3 (110)c epitaxial film

被引：7
作者：
Shimada, Takahiro [1 ]
Arisue, Kou [1 ]
Kitamura, Takayuki [1 ]
机构：
[1] Kyoto Univ, Dept Mech Engn & Sci, Sakyo Ku, Kyoto 6068501, Japan
来源：
PHYSICS LETTERS A | 2012年 / 376卷 / 45期
关键词：
Multiferroics; Thin films; Phase transition; Strains; First-principles; AUGMENTED-WAVE METHOD;
D O I：
10.1016/j.physleta.2012.08.056
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Intriguing rich phase transitions and multiferroic behavior in (110)-oriented BiFeO3 epitaxial films are studied by first-principles calculations. We demonstrate that a BiFeO3 (110)(c) film undergoes complicated monoclinic-monoclinic-orthorhombic (M-a-M-b-O) phase transitions depending on the epitaxial strain conditions. During the phase transition, ferroelectric spontaneous polarization and a magnetic moment due to weak ferromagnetism rotate in different ways, leading to different anisotropies in the magnetoelectric response of the BiFeO3 (110)(c) film. Electronic structure analysis reveals that applying compression worsens the resistance to current leakage of the BiFeO3 film. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：3368 / 3371
页数：4
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