STRUCTURAL AND MAGNETIC PHASE TRANSITIONS OF BiFeO3 INDUCED BY PRESSURE

被引：2

作者：

Feng, Hong-Jian ^{[1
]}

Hu, Xiaoyun ^{[1
]}

Chen, Huijuan ^{[2
]}

机构：

[1] NW Univ Xian, Dept Phys, Xian 710069, Peoples R China

[2] Xian Polytech Univ, Sch Comp Sci, Xian 710048, Peoples R China

来源：

FUNCTIONAL MATERIALS LETTERS | 2013年 / 6卷 / 03期

基金：

中国国家自然科学基金;

关键词：

BiFeO3; phase transitions; antiferromagnetic structure; multiferroics; density functional theory; AUGMENTED-WAVE METHOD; BISMUTH FERRITE; DRIVEN; FILM;

D O I：

10.1142/S1793604713500264

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

First-principles calculations on BiFeO3 under low-pressure region show that the rhombohedral-monoclinic and rhombohedralorthorhombic phase transitions can be found around the critical pressure value, similar to 9 GPa. We suggest that the structure involve the combination of these three phases and change to the pure orthorhombic phase gradually as pressure is beyond the critical value. Moreover, it is a first-order structural phase transition, accompanied with antiferromagnetic - ferromagnetic transition.

引用

页数：4

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