Micromagnetic investigation on the coercivity mechanism of the SmCo5/Sm2Co17 high-temperature magnets
文献类型：期刊论文
| 作者 | Rong, CB ; Zhang, HW ; Chen, RJ ; Shen, BG ; He, SL |
| 刊名 | JOURNAL OF APPLIED PHYSICS
 |
| 出版日期 | 2006 |
| 卷号 | 100期号:12 |
| 关键词 | NANOSCALED PERMANENT-MAGNETS FE-B MAGNETS SM(CO DEMAGNETIZATION PROCESSES CRYSTALLOGRAPHIC TEXTURE REVERSIBLE MAGNETIZATION PRECIPITATION DEPENDENCE CU MICROSTRUCTURE FE CU ZR)(Z) MAGNETS |
| ISSN号 | 0021-8979 |
| 通讯作者 | Rong, CB: Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | The coercivity mechanism of the precipitation-hardened Sm(Co,Fe,Cu,Zr)(z) magnets at different temperature have been investigated by micromagnetic calculations. It was found that the coercivity mechanism varies with the temperature. The magnetization reversal is mainly controlled by domain-wall pinning when the temperature T is lower than 800 K, while it is dominated by coherent rotation at higher temperature. The quantitative analysis shows that the reduced coercivity is linearly related to the difference of domain-wall energy between 1:5 and 2:17 phases at T <= 800 K, while it is mainly determined by the ratio of exchange constant between the two phases at T > 800 K. The temperature dependence of coercivity H-c(T) is the competitive result of the microstructure parameter alpha(ex)(T) and the anisotropy field. The anomalous H-c(T) near the Curie temperature of 1:5 phase is caused by the fast drop of intergrain exchange coupling and thus the fast increase of alpha(ex)(T). The micromagnetic calculations show that the anomalous H-c(T) also can be obtained in the nanocomposite-type SmCo5/Sm2Co17 with an appropriate microstructure. (c) 2006 American Institute of Physics. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/42012]  |
| 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 | Rong, CB,Zhang, HW,Chen, RJ,et al. Micromagnetic investigation on the coercivity mechanism of the SmCo5/Sm2Co17 high-temperature magnets[J]. JOURNAL OF APPLIED PHYSICS,2006,100(12). |
| APA | Rong, CB,Zhang, HW,Chen, RJ,Shen, BG,&He, SL.(2006).Micromagnetic investigation on the coercivity mechanism of the SmCo5/Sm2Co17 high-temperature magnets.JOURNAL OF APPLIED PHYSICS,100(12). |
| MLA | Rong, CB,et al."Micromagnetic investigation on the coercivity mechanism of the SmCo5/Sm2Co17 high-temperature magnets".JOURNAL OF APPLIED PHYSICS 100.12(2006). |
入库方式： OAI收割
来源：物理研究所
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