Large magnetocaloric effect in metamagnetic HoPdAl
文献类型：期刊论文
| 作者 | Xu, ZY ; Shen, BG |
| 刊名 | SCIENCE CHINA-TECHNOLOGICAL SCIENCES
 |
| 出版日期 | 2012 |
| 卷号 | 55期号:2页码:445 |
| 关键词 | ISOSTRUCTURAL PHASE-TRANSITION MAGNETIC ENTROPY CHANGE GDPDAL SINGLE-CRYSTALS REFRIGERATION COMPOUND |
| ISSN号 | 1674-7321 |
| 通讯作者 | Shen, BG: Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China. |
| 中文摘要 | Magnetic properties and magnetocaloric effects (MCEs) of the HoPdAl compounds with the hexagonal ZrNiAl-type and the orthorhombic TiNiSi-type structures are investigated. Both the compounds are found to be antiferromagnet with the N,el temperature T (N) =12 and 10 K, respectively. A field-induced metamagnetic transition from antiferromagnetic (AFM) state to ferromagnetic (FM) state is observed below T (N) . For the hexagonal HoPdAl, a small magnetic field can induce an FM-like state due to a weak AFM coupling, which leads to a high saturation magnetization and gives rise to a large MCE around T (N) . The maximal value of magnetic entropy change (Delta S (M) ) is -20.6 J/kg K with a refrigerant capacity (RC) value of 386 J/kg for a field change of 0-5 T. For the orthorhombic HoPdAl, the critical field required for metamagnetic transition is estimated to be about 1.5 T, showing a strong AFM coupling. However, the maximal Delta S (M) value is still -13.7 J/kg K around T (N) for a field change of 0-5 T. The large reversible Delta S (M) and considerable RC suggest that HoPdAl may be an appropriate candidate for magnetic refrigerant in a low temperature range. |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [50731007, 51021061]; Chinese Academy of Sciences; High-Technology Research and Development Program of China |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/40609]  |
| 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 | Xu, ZY,Shen, BG. Large magnetocaloric effect in metamagnetic HoPdAl[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2012,55(2):445. |
| APA | Xu, ZY,&Shen, BG.(2012).Large magnetocaloric effect in metamagnetic HoPdAl.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,55(2),445. |
| MLA | Xu, ZY,et al."Large magnetocaloric effect in metamagnetic HoPdAl".SCIENCE CHINA-TECHNOLOGICAL SCIENCES 55.2(2012):445. |
入库方式： OAI收割
来源：物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。