Structure evolution and entropy change of temperature and magnetic field induced magneto-structural transition in Mn1.1Fe0.9P0.76Ge0.24
文献类型：期刊论文
| 作者 | Yue, M ; Liu, DM ; Huang, QZ ; Wang, T ; Hu, FX ; Li, JB ; Rao, GH ; Shen, BG ; Lynn, JW ; Zhang, JX |
| 刊名 | JOURNAL OF APPLIED PHYSICS
 |
| 出版日期 | 2013 |
| 卷号 | 113期号:4 |
| ISSN号 | 0021-8979 |
| 通讯作者 | Yue, M (reprint author), Beijing Univ Technol, Minist Educ, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China. |
| 中文摘要 | The compound Mn1.1Fe0.9P0.76Ge0.24 has been studied using neutron powder diffraction (NPD), differential scanning calorimeter (DSC), and magnetic measurements, in order to clarify the nature of the magnetic and structural transition and measure the associated entropy change (Delta S). The strongly first order transition occurs from a paramagnetic (PM) to a ferromagnetic (FM) phase and can be induced either by temperature or by an applied magnetic field. Our investigations indicate that the two processes exhibit identical evolutions regarding the crystal and magnetic structures, indicating they should have the same entropy change. We, therefore, conclude that the Delta S-DSC obtained by the DSC method (where the transition is temperature induced) is valid also for the magnetically induced transition, thus avoiding uncertainties connected with the magnetic measurements. We have obtained the Delta S-DSC = 33.8 J/kg . K for this sample upon cooling, which would increase to 42.7 J/kg . K for a impurity-free and completely homogeneous sample. For comparison, the magnetic entropy changes (Delta S-M) induced by magnetic field and calculated using the Maxwell relation yields a Delta S-M = 46.5 J/kg . K, 38% higher than DSDSC. These entropy results are compared and discussed. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4788803] |
| 资助信息 | Beijing Natural Science Foundation [1112005]; National Natural Science Foundation of China [51171003, 51071007]; National Basic Research Program of China [2010CB8331001] |
| 语种 | 英语 |
| 公开日期 | 2014-01-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57491]  |
| 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 | Yue, M,Liu, DM,Huang, QZ,et al. Structure evolution and entropy change of temperature and magnetic field induced magneto-structural transition in Mn1.1Fe0.9P0.76Ge0.24[J]. JOURNAL OF APPLIED PHYSICS,2013,113(4). |
| APA | Yue, M.,Liu, DM.,Huang, QZ.,Wang, T.,Hu, FX.,...&Zhang, JX.(2013).Structure evolution and entropy change of temperature and magnetic field induced magneto-structural transition in Mn1.1Fe0.9P0.76Ge0.24.JOURNAL OF APPLIED PHYSICS,113(4). |
| MLA | Yue, M,et al."Structure evolution and entropy change of temperature and magnetic field induced magneto-structural transition in Mn1.1Fe0.9P0.76Ge0.24".JOURNAL OF APPLIED PHYSICS 113.4(2013). |
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。