Neutron diffraction study on composite compound Nd2Co7
文献类型：期刊论文
| 作者 | Yang, YQ ; Li, GN ; Wang, T ; Huang, QZ ; Gao, QQ ; Li, JB ; Liu, GY ; Luo, J ; Rao, GH |
| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2011 |
| 卷号 | 20期号:10 |
| 关键词 | EARTH-COBALT COMPOUNDS POWDER-DIFFRACTION FIELD |
| ISSN号 | 1674-1056 |
| 通讯作者 | Rao, GH (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | The crystallographic and the magnetic structures of the composite compound Nd2Co7 at 300 K are investigated by a combined refinement of X-ray diffraction data and high-resolution neutron diffraction data. The compound crystallizes into a hexagonal Ce2Ni7-type structure and consists of alternately stacking MgZn2-type NdCo2 and CaCu5-type NdCo5 structural blocks along the c axis. A magnetic structure model with the moments of all atoms aligning along the c axis provides a satisfactory fitting to the neutron diffraction data and coincides with the easy magnetization direction revealed by the X-ray diffraction experiments on magnetically pre-aligned fine particles. The refinement results show that the derived atomic moments of the Co atoms vary in a range of 0.7 mu(B)-1.1 mu(B) and the atomic moment of Nd in the NdCo5 slab is close to the theoretical moment of a free trivalent Nd3+ ion, whereas the atomic moment of Nd in the NdCo2 slab is much smaller than the theoretical value for a free Nd3+ ion. The remarkable difference in the atomic moment of Nd atoms between different structural slabs at room temperature is explained in terms of the magnetic characteristics of the NdCo2 and NdCo5 compounds and the local chemical environments of the Nd atoms in different structural slabs of the Nd2Co7 compound. |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [50631040]; National Basic Research Program of China [2006CB601101, 2006CB605101] |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/49814]  |
| 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 | Yang, YQ,Li, GN,Wang, T,et al. Neutron diffraction study on composite compound Nd2Co7[J]. CHINESE PHYSICS B,2011,20(10). |
| APA | Yang, YQ.,Li, GN.,Wang, T.,Huang, QZ.,Gao, QQ.,...&Rao, GH.(2011).Neutron diffraction study on composite compound Nd2Co7.CHINESE PHYSICS B,20(10). |
| MLA | Yang, YQ,et al."Neutron diffraction study on composite compound Nd2Co7".CHINESE PHYSICS B 20.10(2011). |
入库方式： OAI收割
来源：物理研究所
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