Structural analysis and magnetic properties of Gd doped BiFeO3 ceramics

被引：49

作者：

Ablat, Abduleziz ^{[1
]}

Wu, Rong ^{[1
]}

Mamat, Mamatrishat ^{[1
]}

Li, Jing ^{[1
]}

Muhemmed, Emin ^{[2
]}

Si, Cheng ^{[2
]}

Wu, Rui ^{[2
]}

Wang, Jiaou ^{[2
]}

Qian, Haijie ^{[2
]}

Ibrahim, Kurash ^{[2
]}

机构：

[1] Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830046, Peoples R China

[2] Chinese Acad Sci, Beijing Synchrotron Radiat Facil, Inst High Energy Phys, Beijing 100049, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Powders: solid state reaction; X-ray methods; Multiferroics; BiFeO3; MULTIFERROIC PROPERTIES; FERROMAGNETISM; TRANSITION; LA;

D O I：

10.1016/j.ceramint.2014.05.137

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Multiferroic Bi1-xGdxFeO3 (0 <= x <= 0.15) samples were prepared using the solid-state reaction method. The influence of Gd substitution on the crystal, the electronic structure, and the magnetic properties of Bi1-xGdxFeO3 was studied. X-ray diffraction spectra show that Gd substitution changes the crystal structure of the Bi1-xGdxFeO3 system from a rhombohedral to an orthorhombic phase. According to Fe L-edge X-ray absorption spectra (XAS), Fe ions are found to be formally trivalent for any value of x in Bi1-xGdxFeO3. Based on a careful examination of Fe L and O K-edge XAS spectra, it was found that the enhanced magnetization which results from increasing Gd content is attributed to a reduced degree of hybridization between Fe 3d-O 2p orbitals. The crystal and electronic structures exhibit a causal relationship between themselves and demonstrated intrinsic mutual dependence in their corresponding variations. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：14083 / 14089

页数：7

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