Determination of local magnetic moments of 5d impurities in Fe detected via spin‐dependent absorption
Determination of local magnetic moments of 5d impurities in Fe detected via spin‐dependent absorption
复制标题
DOI：
10.1063/1.348786
复制
发表时间：
1991-04
影响因子：
3.2
通讯作者：
R. Wienke;G. Schütz;H. Ebert
中科院分区：
文献类型：
--
作者：
R. Wienke;G. Schütz;H. Ebert
利用圆极化同步辐射的自旋相关吸收光谱是研究多元体系磁结构的一种新方法。我们证明，对于铁基质中的替代5d过渡金属杂质，可以从L2，3自旋相关的吸收信号中推断出由吸收原子的d电子携带的局域磁矩信息。实验测得的Fe中5d杂质的局域磁矩与自旋极化相对论Korringa-Kohn-Rostoker-Green能带结构计算方法的理论结果符合得很好。据我们所知，所提供的数据是由上述计算预测的Os和Ir之间从反铁磁耦合到铁磁耦合的第一个实验证明。−−。
The spectroscopy of spin‐dependent absorption using circularly polarized synchrotron radiation is a new method to study the magnetic structure of multicomponent systems. We demonstrate for substitutional 5d transition‐metal impurities in an iron host that from L2,3 spin‐dependent absorption signal information on the local magnetic moment, carried by the d electrons of the absorbing atom, can be deduced. The experimentally determined local magnetic moments of the 5d impurities in Fe are in good agreement with the theoretical results based on the spin‐polarized relativistic Korringa–Kohn–Rostoker–Green function method of band‐structure calculation. The presented data are−to our knowledge−the first experimental proof of the change from antiferro‐ to ferromagnetic coupling between Os and Ir, which has been predicted by the above‐mentioned calculations.