The magnetization reversal behaviour for SmCo_(6.8)Zr_(0.2) and SmCo_(6.8)Zr_(0.2)/α -(Fe,Co) nanocrystalline magnets at low temperature
文献类型：期刊论文
| 作者 | Liu Zhuang2; Chen Renjie1; Li Dong1; Yan Arru1 |
| 刊名 | CHINESE PHYSICS. B
 |
| 出版日期 | 2010 |
| 卷号 | 19 |
| 关键词 | nanocrystalline magnets coercivity mechanism inter-grain exchange coupling magnetization reversal behaviour |
| ISSN号 | 1674-1056 |
| 英文摘要 | This paper reports that the SmCo_(6.8)Zr_(0.2) nanocrystalline permanent magnets and SmCo_(6.8)Zr_(0.2)/α-(Fe,Co) nanocomposite permanent magnets are successfully produced by mechanical alloying and subsequently annealing at 700 ℃ for 10 minutes. The x-ray diffraction results show that the phase structure of SmCo_(6.8)Zr_(0.2) nanocrystalline permanent magnets is composed of SmCo_7 phase and SmCo_(6.8)Zr_(0.2)/α-(Fe,Co) nanocomposite permanent magnets is composed of SmCo_7 and α -(Fe,Co) phases. The mechanism of magnetization reversal is mainly controlled by inhomogeneous domain wall pinning in SmCo_(6.8)Zr_(0.2) and SmCo_(6.8)Zr_(0.2)/α-(Fe,Co) magnets. The inter-grain exchange interaction at low temperature is investigated, which shows that the inter-grain exchange interaction of SmCo_(6.8)Zr_(0.2)/α-(Fe,Co) magnets increases greatly by the decrease of the measured temperature. According to △m_(irr)-H/H_(cj), △m_(rev)-H/H_(cj) and X_(irr)-H/H_(cj) curves at room temperature and 100 K, the changes of irreversible and reversible magnetization behaviours of SmCo_(6.8)Zr_(0.2) and SmCo_(6.8)Zr_(0.2)/α-(Fe,Co) magnets with the decreasing temperature are analysed in detail. The magnetic viscosity and the activation volume of SmCo_(6.8)Zr_(0.2) and SmCo_(6.8)Zr_(0.2)/α-(Fe,Co) magnets at different temperatures are also studied. |
| 语种 | 英语 |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/132972]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 作者单位 | 1.中国科学院 2.中国科学院固体物理研究所 |
| 推荐引用方式 GB/T 7714 | Liu Zhuang,Chen Renjie,Li Dong,et al. The magnetization reversal behaviour for SmCo_(6.8)Zr_(0.2) and SmCo_(6.8)Zr_(0.2)/α -(Fe,Co) nanocrystalline magnets at low temperature[J]. CHINESE PHYSICS. B,2010,19. |
| APA | Liu Zhuang,Chen Renjie,Li Dong,&Yan Arru.(2010).The magnetization reversal behaviour for SmCo_(6.8)Zr_(0.2) and SmCo_(6.8)Zr_(0.2)/α -(Fe,Co) nanocrystalline magnets at low temperature.CHINESE PHYSICS. B,19. |
| MLA | Liu Zhuang,et al."The magnetization reversal behaviour for SmCo_(6.8)Zr_(0.2) and SmCo_(6.8)Zr_(0.2)/α -(Fe,Co) nanocrystalline magnets at low temperature".CHINESE PHYSICS. B 19(2010). |
入库方式： OAI收割
来源：合肥物质科学研究院
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