Structural and multiferroic properties of Fe-doped Ba0.5Sr0.5TiO3 solids

被引：49

作者：

Guo, Zhengang ^{[1
]}

Pan, Liqing ^{[1
,2
]}

Bi, Chong ^{[1
]}

Qiu, Hongmei ^{[1
]}

Zhao, Xuedan ^{[1
]}

Yang, Lihong ^{[1
]}

Rafique, M. Yasir ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Dept Phys, Beijing 100083, Peoples R China

[2] China Three Gorges Univ, Coll Sci, Yichang 443002, Hubei, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2013年 / 325卷

基金：

北京市自然科学基金; 中国国家自然科学基金;

关键词：

Ceramic; Crystal structure; Dielectric; Multiferroic material; THIN-FILMS; DIELECTRIC-PROPERTIES; SPINTRONICS;

D O I：

10.1016/j.jmmm.2012.08.023

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structural, dielectric, ferroelectric, and magnetic properties of bulk Fe-doped Ba0.5Sr0.5TiO3 (Ba0.5Sr0.5T1-xFexO3; BSTF) solids prepared by standard solid-state reaction were investigated. X-ray diffraction (XRD) patterns confirmed the tetragonal structure of BSTF samples. Rietveld refinements of XRD data revealed that the doping ions lead to unit cell expansion in three directions. Ferroelectric and ferromagnetic orders of the samples were observed simultaneously at room temperature. According to experimental and simulated results, two possible exchange coupling mechanisms exist in the BSTF systems, namely, nearest-site antiferromagnetic coupling and next-nearest-site ferromagnetic coupling. The two coupling mechanisms coexist in BSTF systems, leading to extraordinary ferromagnetic behavior. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：24 / 28

页数：5

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