An experimental study of the local electronic structure of B-site gallium doped bismuth ferrite powders

doi:10.1016/j.physleta.2017.05.007

	An experimental study of the local electronic structure of B-site gallium doped bismuth ferrite powders
	Aimidula, A; Wu, R; Mamat, M; Ablat, A; Zheng, LR; Bake, MA; Qian, HJ; Gholam, T; Wang JO(王嘉鸥); Zheng LR(郑黎荣)
刊名	PHYSICS LETTERS A
	2017
卷号	381 期号:29 页码:2367-2373
关键词	Hydrothermal method Multiferroics X-ray absorption fine structure BiFeO3
ISSN号	0375-9601
DOI	10.1016/j.physleta.2017.05.007
文献子类	Article
英文摘要	The un-doped and gallium (Ga) doped multiferroic bismuth ferrite (BiFeO3) compounds were successfully synthesized by the hydrothermal technique. This is then followed by a series of detailed investigations into the influence of Ga doping on the structural, morphological, optical and magnetic properties of BiFe1_xGaxO3 (0 <= x <= 0.15). X-ray diffraction (XRD) analyses reveal that B-site doping of Ga may lead to the transformation of its crystal structure from a rhombohedral with a space group of R3c to an orthorhombic with a space group of Pbnm phase. The scanning electron microscope (SEM) images show that doping with Ga causes a significant reduction in particle size, when compared to un-doped BiFeO3. X-ray absorption near-edge structure (XANES) spectra have also shown that as the substitution of Ga increases, the Fe K and Bi L-III-edge absorption spectra shift towards higher energy site. It also implies that doping of Ga affects the local structures of both Bi and Fe atoms. Distinct transmission band fluctuations, as shown by Fourier transform infrared (FT-IR) spectra, can provide significant evidence for a transformation in crystal structure, following the increase of Ga concentration. The magnetization hysteresis measurements show that the magnetization decreases when Ga content is x >= 0.05. Such a phenomenon mainly stems from the substitution of Fe for an excessive amount of Ga, resulting in reduction of both valence fluctuations and the magnetization in the BiFe1_xGaxO3 system. (C) 2017 Elsevier B.V. All rights reserved.
电子版国际标准刊号	1873-2429
WOS关键词	HYDROTHERMAL SYNTHESIS ; WEAK FERROMAGNETISM ; THIN-FILMS ; BIFEO3 ; PHASE
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000403986900014
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/284902]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Aimidula, A,Wu, R,Mamat, M,et al. An experimental study of the local electronic structure of B-site gallium doped bismuth ferrite powders[J]. PHYSICS LETTERS A,2017,381(29):2367-2373.
APA	Aimidula, A.,Wu, R.,Mamat, M.,Ablat, A.,Zheng, LR.,...&奎热西.(2017).An experimental study of the local electronic structure of B-site gallium doped bismuth ferrite powders.PHYSICS LETTERS A,381(29),2367-2373.
MLA	Aimidula, A,et al."An experimental study of the local electronic structure of B-site gallium doped bismuth ferrite powders".PHYSICS LETTERS A 381.29(2017):2367-2373.