Verification of Ni magnetic moment in GdNi2 Laves phase by magnetic circular dichroism measurement -: art. no. 132404
Verification of Ni magnetic moment in GdNi2 Laves phase by magnetic circular dichroism measurement -: art. no. 132404
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DOI：
10.1103/physrevb.67.132404
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发表时间：
2003-04-01
影响因子：
3.7
通讯作者：
Muro, T
中科院分区：
文献类型：
--
作者：
Mizumaki, M;Yano, K;Muro, T
用磁圆二色性（MCD）方法研究了多晶GdNi_2 Laves相中Ni的磁矩。结果表明，源自3d态（带）的镍磁矩确实存在，并且与钆的磁矩反平行耦合，钆的MCD在M-4，M-5吸收边处观察到。也就是说，即使在Laves相浓度下，镍也保持固有磁矩。通过求和规则的分析，计算并讨论了自旋磁矩和轨道磁矩对磁矩的贡献。
Investigation of the magnetic moment of nickel in the polycrystal GdNi2 Laves phase was carried out by means of magnetic circular dichroism (MCD) in the core-level x-ray-absorption spectroscopy. It was revealed that the nickel magnetic moment originating from the 3d state (band) does exist and couples antiparallel to that of gadolinium whose MCD was observed at the M-4,M-5 absorption edge. That is, nickel retains an intrinsic magnetic moment even in the Laves phase concentration. Furthermore, by analyzing in terms of sum rule, the contribution of spin and orbital magnetic moments to the magnetic moment was evaluated and discussed.