Magnetic properties and magnetocaloric effects in NaZn13-type La(Fe, Al)(13)-based compounds
文献类型：期刊论文
| 作者 | Shen, BG ; Hu, FX ; Dong, QY ; Sun, JR |
| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2013 |
| 卷号 | 22期号:1 |
| 关键词 | La(Fe magnetocaloric effect magnetic entropy change magnetic phase transition Al)(13) compounds |
| ISSN号 | 1674-1056 |
| 通讯作者 | Shen, BG (reprint author), Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China. |
| 中文摘要 | In this article, our recent progress concerning the effects of atomic substitution, magnetic field, and temperature on the magnetic and magnetocaloric properties of the LaFe13-xAlx compounds are reviewed. With an increase of the aluminum content, the compounds exhibit successively an antiferromagnetic (AFM) state, a ferromagnetic (FM) state, and a mictomagnetic state. Furthermore, the AFM coupling of LaFe13-xAlx can be converted to an FM one by substituting Si for Al, Co for Fe, and magnetic rare-earth R for La, or introducing interstitial C or H atoms. However, low doping levels lead to FM clusters embedded in an AFM matrix, and the resultant compounds can undergo, under appropriate applied fields, first an AFM-FM and then an FM-AFM phase transition while heated, with significant magnetic relaxation in the vicinity of the transition temperature. The Curie temperature of LaFe13-xAlx can be shifted to room temperature by choosing appropriate contents of Co, C, or H, and a strong magnetocaloric effect can be obtained around the transition temperature. For example, for the LaFe11.5Al1.5C0.2H1.0 compound, the maximal entropy change reaches 13.8 J.kg(-1).K-1 for a field change of 0-5 T, occurring around room temperature. It is 42% higher than that of Gd, and therefore, this compound is a promising room-temperature magnetic refrigerant. |
| 资助信息 | National Natural Science Foundation of China; Key Research Program of the Chinese Academy of Sciences; National Basic Research Program of China; National High Technology Research and Development Program of China |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57193]  |
| 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 | Shen, BG,Hu, FX,Dong, QY,et al. Magnetic properties and magnetocaloric effects in NaZn13-type La(Fe, Al)(13)-based compounds[J]. CHINESE PHYSICS B,2013,22(1). |
| APA | Shen, BG,Hu, FX,Dong, QY,&Sun, JR.(2013).Magnetic properties and magnetocaloric effects in NaZn13-type La(Fe, Al)(13)-based compounds.CHINESE PHYSICS B,22(1). |
| MLA | Shen, BG,et al."Magnetic properties and magnetocaloric effects in NaZn13-type La(Fe, Al)(13)-based compounds".CHINESE PHYSICS B 22.1(2013). |
入库方式： OAI收割
来源：物理研究所
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