中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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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