Multiferroic properties of Y-doped BiFeO3

被引：45

作者：

Luo, Lirong ^{[3
]}

Wei, Wei ^{[3
]}

Yuan, Xueyong ^{[1
]}

Shen, Kai ^{[3
]}

Xu, Mingxiang ^{[1
]}

Xu, Qingyu ^{[1
,2
]}

机构：

[1] Southeast Univ, Dept Phys, Nanjing 211189, Jiangsu, Peoples R China

[2] Southeast Univ, Minist Educ, Key Lab MEMS, Nanjing 210096, Jiangsu, Peoples R China

[3] Nanjing Univ Aeronaut & Astronaut, Sch Mat Sci & Technol, Nanjing 210016, Jiangsu, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 540卷

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

Ceramics; Ferroelectrics; Magnetic materials; Sol-gel preparation; CRYSTAL-STRUCTURE; BISMUTH FERRITE; THIN-FILMS;

D O I：

10.1016/j.jallcom.2012.06.106

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Bi1.04-xYxFeO3 ceramics with x up to 0.30 were prepared by a tartaric acid modified sol-gel method. The crystal structure transformed from rhombohedral (R3c) to orthorhombic (Pn2(1)a) with increasing Y doping concentration, which was confirmed by the X ray diffraction (XRD) and Raman measurements. With increasing Y doping concentration x, the leakage current was effectively suppressed, and the room temperature ferromagnetism was strongly enhanced with increasing x to 0.30. Clear room temperature ferromagnetism with saturate magnetization of about 0.31 emu/g and ferroelectric properties with 25 mu C/cm(2) under electric field of 120 kV/cm have been observed in orthorhombic Bi0.74Y0.30FeO3, suggesting the potential multiferroic applications. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：36 / 38

页数：3

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