Analysis of interfacial magnetic anisotropy in Co∕Pt and Co∕Pd multilayer films
Analysis of interfacial magnetic anisotropy in Co∕Pt and Co∕Pd multilayer films
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DOI：
10.1063/1.1851874
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发表时间：
2005-05
影响因子：
3.2
通讯作者：
H. Nemoto;Y. Hosoe
中科院分区：
文献类型：
--
作者：
H. Nemoto;Y. Hosoe
分析的Co scinPt和Co scinPd多层膜进行调查的界面磁各向异性（IMA）和感应磁化的Pd或Pt层的叠层厚度的依赖性。对于Co scinPd薄膜，IMA能量随着Pd层厚度的增加而增加，并与感生磁化强度成正比。这表明在几个Pd原子层中诱导的整个磁矩对IMA有贡献。相反，对于Co scinPt膜，只有当Pt层的厚度小于0.2nm时，这种比例关系才成立。由于一个Pt单层是0.225nm厚，所以Co scinPt膜中的IMA能量的量与Pt-Co原子接触的数量成比例。Co scinPt和Co scinPd多层膜之间的这种差异归因于Pt和Pd之间的潜在铁磁性的差异。
Analysis of Co∕Pt and Co∕Pd multilayer films was performed to investigate the dependence of interfacial magnetic anisotropy (IMA) and induced magnetization on the thickness of the laminated Pd or Pt layers. For the Co∕Pd films, the IMA energy increased as the thickness of the laminated Pd layer was increased up to ∼0.8nm and depended proportionally on the amount of the induced magnetization. This suggests that the whole magnetic moment induced in a few Pd atomic layers contributed to the IMA. In contrast, for the Co∕Pt films, this proportional relationship only held when the thickness of the Pt layer was less than ∼0.2nm. Since one Pt monolayer is 0.225nm thick, the amount of the IMA energy in the Co∕Pt films is proportional to the number of Pt–Co atomic contacts. This difference between Co∕Pt and Co∕Pd multilayer films is attributed to the difference in the latent ferromagnetism between Pt and Pd.