Existence and origin of compensation layer thickness in Tb20Co80/Pd multilayered films
Existence and origin of compensation layer thickness in Tb20Co80/Pd multilayered films
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DOI：
10.1088/0022-3727/41/5/055003
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发表时间：
2008-03-07
影响因子：
3.4
通讯作者：
Osaka, Tetsuya
中科院分区：
文献类型：
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作者：
Tanaka, Masahito;Asahi, Toru;Osaka, Tetsuya
用软X射线吸收光谱和磁性圆二色谱技术研究了[Tb20Co80/Pd(0.8 nm)](20)多层膜在Co L-2，L-3和Tb M-4，M-5边的磁性。当磁化强度为零时，TbCo的补偿层厚度为5-6 nm。用求和规则进行的XAS和MCD分析表明，补偿层厚度的存在主要是因为Tb4f的投射磁矩随层厚的增加而增加，而Co3d磁矩与层厚度无关。在补偿层厚度以下，Co亚晶格磁化占主导地位。
Magnetic properties of [ Tb20Co80/Pd(0.8 nm)](20) multilayered films with a TbCo layer of thickness 0.2-8.0 nm were studied using spectroscopic techniques of soft x-ray absorption (XAS) and magnetic circular dichroism ( MCD) at the Co L-2,L-3 and Tb M-4,M-5 edges. The compensation layer thickness of TbCo, where magnetization becomes zero, was observed to be 5-6 nm. XAS and MCD analyses using the sum rule revealed that the existence of the compensation layer thickness was primarily because the projected Tb 4f magnetic moment was enhanced with the increase in the layer thickness, while the Co 3d moment was independent of the layer thickness. Below the compensation layer thickness, Co sublattice magnetization was dominant.