| A STUDY ON THE ULTRASONIC VELOCITY AND ATTENU-ATION IN NdFeB MAGNET WITHIN THE TEMPERATURE RANGE OF 80 - 300K (Ⅱ) |
| |
| 引用本文： | 陆华,王向东,K.MOTAI,T.HASHIZUME,T.SAKURAI.A STUDY ON THE ULTRASONIC VELOCITY AND ATTENU-ATION IN NdFeB MAGNET WITHIN THE TEMPERATURE RANGE OF 80 - 300K (Ⅱ)[J].中国物理 B,1993,2(3):191-201. |
| |
| 作者姓名： | 陆华 王向东 K.MOTAI T.HASHIZUME T.SAKURAI |
| |
| 作者单位： | Beijing Quenchmag Incoporation, Beijing 100084,China;Beijing Quenchmag Incoporation, Beijing 100084,China |
| |
| 基金项目： | Project supported in part by the State Key Laboratory of Magnetism, Institute of Physics, Academia Sinica. |
| |
| 摘 要： |
|
FI-STM STUDY OF HYDROGEN ADSORPTION ON Si(100) SURFACE |
| |
| LU HUA,WANG XIANG-DONG,K.MOTAI,T.HASHIZUME and T.SAKURAI.FI-STM STUDY OF HYDROGEN ADSORPTION ON Si(100) SURFACE[J].Chinese Physics B,1993,2(3):191-201. |
| |
| Authors: | LU HUA WANG XIANG-DONG KMOTAI THASHIZUME and TSAKURAI |
| |
| Abstract: | Based on the ultrasonic measurements of an isotropic NdFeB magnet in the temperature range of 77 -300 K, it was found that the elastic parameters, such as Young's modulus E, and Poisson ratio v, change abruptly near the spin reorientation temperature Tsr. This indicates that soft mode emerges in the process of spin reorientation. Thermal hysteresis was observed during heating-up and cooling-down processes. Both Debye temperature and heat capacity were calculated, which suggests that the magnetic entropy of the Nd-sublattice is larger in easy-cone state than in easy-axis state. |
| |
| Keywords: | |
|
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
|
