Spin and orbital moments of electrodeposited Fe28Co51Ni21 soft magnetic films determined by X-ray magnetic circular dichroism
Spin and orbital moments of electrodeposited Fe28Co51Ni21 soft magnetic films determined by X-ray magnetic circular dichroism
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DOI：
10.1016/j.jallcom.2015.09.196
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发表时间：
2016-01
影响因子：
6.2
通讯作者：
Xiuyu Sun;Zongmu Li;F. Xu;Yuebo Wang
中科院分区：
文献类型：
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作者：
Xiuyu Sun;Zongmu Li;F. Xu;Yuebo Wang
采用扫描电子显微镜（SEM）、磁力显微镜（MFM）、X射线吸收光谱（XAS）和X射线磁圆二色性（XMCD）研究了在GaAs基片上电沉积Fe 28 Co 51 Ni 21三元合金薄膜。磁光克尔效应（MOKE）实验结果表明，Fe 28 Co 51 Ni 21薄膜具有典型的软磁特性，没有明显的面内磁各向异性。通过对XMCD结果应用求和规则计算了合金中Fe、Co和Ni的自旋和轨道磁矩。合金中Fe原子的自旋磁矩降低，这归因于反铁磁fcc相的形成。Fe-组原子的轨道矩的增加与晶体场效应的减少相关。合金化后局部环境的变化增强了Co和Ni原子的自旋矩。
Fe28Co51Ni21ternary alloy thin films electrodeposited on GaAs wafers were investigated by scanning electron microscopy (SEM), magnetic force microscopy (MFM), X-ray absorption spectroscopy (XAS), and X-ray magnetic circular dichroism (XMCD). Experimental Magneto-optical Kerr effect (MOKE) data showed that the Fe28Co51Ni21films present typical soft magnetic properties and no obvious in-plane magnetic anisotropy. The spin and orbital magnetic moments of Fe, Co, and Ni in the alloy were calculated by applying sum rules to the XMCD results. The spin moments of Fe atoms in the alloy decreased, which is attributed to the formation of an antiferromagnetic fcc phase. Increases in the orbital moments of Fe-group atoms were correlated with decreases in crystal field effects. The spin moments of Co and Ni atoms were enhanced by variations in the local environment after alloying.