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| Ce2(CO,Si)17化合物的结构与磁晶各向异性 | |
| 引用本文： | 胡社军,刘正义,魏兴钊,曾德长,F.R.de Boer,K.H.J.Buschow. Ce2(CO,Si)17化合物的结构与磁晶各向异性[J]. 材料研究学报, 2000, 14(4): 438-444 |
| 作者姓名： | 胡社军 刘正义 魏兴钊 曾德长 F.R.de Boer K.H.J.Buschow |
| 作者单位： | 1. 广东工业大学;华南理工大学;Van der Waals-Zeeman Institute,The University of Amsterdam The Netherlands 2. 华南理工大学 3. 华南理工大学;Van der Waals-Zeeman Institute,The University of Amsterdam The Netherlands 4. Van der Waals-Zeeman Institute,The University of Amsterdam The Netherlands |
| 基金项目： | 国家自然科学基金;59771026; |
| 摘 要： | 用真空电弧熔炼了Ｃｅ２Ｃｏ１７－ｘＳｉｘ化合物，研究了化合物的结构与内禀磁性，研究了Ｓｉ原子在Ｃｏ次晶格四种晶位的择优占位与Ｃｏ次晶格磁晶各向异性的关系，结果表明，１８ｈ晶位对Ｃｏ次晶格磁晶各向异性的负贡献起重要作用。 |
| 关 键 词： | 磁晶各向异性 铈－钴永磁材料 结构 |
| 文章编号： | 1005-3093(2000)04-0438-07 |
| 修稿时间： | 1999-08-10 |
CRYSTAL STRUCTURE AND MAGNETOCRYSTALLINE ANISOTROPY OF Ce2(Co, Si)17 COMPOUNDS |
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| HU Shejun,LIU Zhengyi,WEI Xingzhao,ZENG Dechang,F.R.de Boer,K.H.J.Buschow. CRYSTAL STRUCTURE AND MAGNETOCRYSTALLINE ANISOTROPY OF Ce2(Co, Si)17 COMPOUNDS[J]. Chinese Journal of Materials Research, 2000, 14(4): 438-444 | |
| Authors: | HU Shejun LIU Zhengyi WEI Xingzhao ZENG Dechang F.R.de Boer K.H.J.Buschow |
| Abstract: | Ce2Co17-xSix compounds with Si concentration up to x = 4 were prepared by vacuum arc melting. The structure and intrinsic magnetic properties of these compounds, including their crystal structure parameters, Curie temperature, spontaneous moments, average moment per Co-atom, anisotropy fields and anisotropy constants, were studied by means of X-ray diffraction and magnetic measurements. Special attention was paid to the relationship between the magnetocrystalline anisotropy of the Co-sublattice and the preferred site occupation of Si atoms over the four available crystallographic sites on the Co-sublattice. The results showed that 18 site plays an important role to contribute negative Co-sublattice anisotropy in R2Co17 compounds. |
| Keywords: | Ce-Co permanent materials magnetocrystalline anisotropy preferred crystallographic site occupation |
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