An experimental study of the local electronic structure of B-site gallium doped bismuth ferrite powders
文献类型：期刊论文
| 作者 | 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)
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| 刊名 | PHYSICS LETTERS A
 |
| 出版日期 | 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 |
| 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. |
入库方式： OAI收割
来源：高能物理研究所
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