X射线磁性圆二色吸收谱  

X ray magnetic circular dichroism absorption spectroscopy

作　　者：王劼[1] 周映雪[1] 

机构地区：[1]中国科学技术大学国家同步辐射实验室,合肥230029

出　　处：《核技术》2001年第7期585-590,共6页Nuclear Techniques

摘　　要：介绍了Ｘ射线磁性圆二色（ＸＭＣＤ）的基本概念和理论，综述了ＸＭＣＤ在磁学研究中的应用。ＸＭＣＤ吸收谱可以研究磁性薄膜与超薄膜、“三明治”结构的磁性薄膜中特定元素、特定位置的磁性质。在这些结构中理论和磁学实验均已获得与体材料非常不同的磁学性质，而ＸＭＣＤ可以深入了解这些现象的本质。介绍了合肥国家同步辐射实验室二期工程的磁性圆二色实验线站的总体设计及目前的发展。Basic concepts and applications about XMCD absorption spectroscopy were reviewed. One may deduce the spin magnetic moments, orbital magnetic moments and magnetic structure anisotropies of magnetic elements according to sum rules of XMCD. Magnetic films, ultra - thin films and sandwich films can be studied by XMCD, in which there are distinguishing features from that of bulk samples. By now, XMCD has combined with other techniques, such as, microscopy, EXAFS/XAFS, to extend magnetic researches. The design of the beamline and endstation of soft X ray magnetic circular dichroism at the National Synchrotron Radiation Laboratory and its present development were introduced.

关 键 词：X射线吸收 磁性圆二色 同步辐射 偏振 XMCD光谱 磁学研究 

分 类 号：O482.5[理学—固体物理] O434.13[理学—物理]