Effect of Co Replacement with Fe on Uniaxial Magnetocrystalline Anisotropy in Disordered hcp CoPtRh Alloy Films
Effect of Co Replacement with Fe on Uniaxial Magnetocrystalline Anisotropy in Disordered hcp CoPtRh Alloy Films
复制标题
Fe 替代 Co 对无序 hcp CoPtRh 合金薄膜中单轴磁晶各向异性的影响
DOI：
10.1109/tmag.2013.2246833
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发表时间：
2013
影响因子：
2.1
通讯作者：
Shintaro Hinata and Migaku Takahashi
中科院分区：
文献类型：
--
作者：
Naoki Nozawa;Shin Saito;Shintaro Hinata and Migaku Takahashi
研究了在无序 CoPtRh 合金薄膜中用 Fe 代替 Co 的效果，目的是增加自旋磁矩。将Fe添加到纯Co薄膜中产生了具有最大单轴磁晶各向异性（Ku）的Co98Fe2薄膜，因为磁矩随着hcp晶粒中诱发的堆垛层错（SF）程度的增加而增加，与纯Co薄膜的堆垛层错（SF）程度相同。将(Co0.98Fe0.02)PtRh薄膜与相同Pt和Rh含量的CoPtRh薄膜进行比较，结果表明：1)SFs程度增加； 2）磁矩增大； 3) (Co0.98Fe0.02)PtRh 薄膜中所有成分的 Kuwas 均降低。特别地，Rh含量大于Pt的(Co0.98Fe0.02)PtRh和CoPtRh膜通过增强磁矩而增加库马尼数的范围更大，同时SF的程度保持或进一步降低。
The effect of replacing Co with Fe in disordered CoPtRh alloy films was investigated with the aim to increase the spin magnetic moment. The addition of Fe into a pure Co film produced a Co98Fe2film with maximum uniaxial magnetocrystalline anisotropy (Ku), because the magnetic moment is increased with the same degree of stacking faults (SFs) induced into the hcp grains as that for a pure Co film. (Co0.98Fe0.02)PtRh films were compared with CoPtRh films with the same Pt and Rh contents, which revealed that: 1) the degree of SFs were increased; 2) the magnetic moment was increased; and 3) Kuwas decreased for all compositions in the (Co0.98Fe0.02)PtRh films. In particular, the (Co0.98Fe0.02)PtRh and CoPtRh films with a larger Rh content than Pt have a greater range for increase of the Kumagnitude by enhancement of the magnetic moment with the retention of or further decrease in the degree of SFs.