Novel behaviors of multiferroic properties in Na-Doped BiFeO3 nanoparticles
文献类型：期刊论文
| 作者 | Zhang, H ; Liu, WF ; Wu, P ; Hai, X ; Guo, MC ; Xi, XJ ; Gao, J ; Wang, X ; Guo, F ; Xu, XL ; Wang, C ; Liu, GY ; Chu, WG ; Wang, SY |
| 刊名 | NANOSCALE
 |
| 出版日期 | 2014 |
| 卷号 | 6期号:18页码:10831 |
| ISSN号 | 2040-3364 |
| 通讯作者 | Liu, WF (reprint author), Tianjin Univ, Fac Sci, Tianjin Key Lab Low Dimens Mat Phys & Preparing T, Tianjin 300072, Peoples R China. |
| 中文摘要 | Highly aliovalent Na1+ ions were selected as the dopant to substitute Bi3+ ions in BiFeO3 (BFO) and Bi1-xNaxFeO3 (x = 0, 0.01, 0.03, 0.05) nanoparticles prepared via a facile sol-gel method. Weak ferromagnetism and an obvious exchange bias (EB) phenomenon without field cooling were observed in the samples. To establish the presence of EB in the nanoparticles, training effect (TE) data were analyzed using Binek's model. Moreover, with the increase in Na1+ content, the band gap was decreased, while interestingly, the leakage current density was significantly reduced and the smallest leakage current density (similar to 10(-7) A cm(-2)) was observed for the 3% Na-doped BFO. The electrical conduction mechanism of samples was investigated by plotting log J versus log E. Oxygen vacancies decreased with the increase of Na content analyzed through X-ray photoelectron spectroscopy (XPS) measurements. To further explain the decrease of band gap and leakage current density with the increase of Na content, the interplay of oxygen vacancies and holes was analyzed and a phenomenological qualitative model based on the electronic energy band proposed. |
| 资助信息 | Research Grant Council of Hong Kong [HKU 702112P, RGC 701813]; National Natural Science Foundation of China [11004148, 11104202] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59354]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhang, H,Liu, WF,Wu, P,et al. Novel behaviors of multiferroic properties in Na-Doped BiFeO3 nanoparticles[J]. NANOSCALE,2014,6(18):10831. |
| APA | Zhang, H.,Liu, WF.,Wu, P.,Hai, X.,Guo, MC.,...&Wang, SY.(2014).Novel behaviors of multiferroic properties in Na-Doped BiFeO3 nanoparticles.NANOSCALE,6(18),10831. |
| MLA | Zhang, H,et al."Novel behaviors of multiferroic properties in Na-Doped BiFeO3 nanoparticles".NANOSCALE 6.18(2014):10831. |
入库方式： OAI收割
来源：物理研究所
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