Correlation between magnetic anisotropy and permeability of amorphous multi-layered films.
Correlation between magnetic anisotropy and permeability of amorphous multi-layered films.
复制标题
非晶多层薄膜的磁各向异性与磁导率之间的相关性。
DOI：
10.3379/jmsjmag.12.295
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发表时间：
1988
影响因子：
--
通讯作者：
Y. Shimada
中科院分区：
文献类型：
--
作者：
A. Hosono;Y. Shimada
研究了非晶单层和多层薄膜的磁导率。随着单轴各向异性的减小，沿硬轴的渗透率在低频增大，而在高频减小。随着层厚的减小，层状膜的畴结构变得简单，膜具有高磁导率（> 10000）和良好的频率特性。而对于大Hk（≥1.3 Oe）的薄膜，渗透率不表现出明显的结构依赖性。基于Landau-Lifshitz模型的简单计算表明，当磁化方向偏离易轴时，高频旋转磁导率会下降。研究发现，通过优化多层结构，可以获得既具有高磁导率又具有良好频率特性的薄膜。
Permeability of amorphous single and multilayered films is studied. As the uniaxial anisotropy becomes smaller, permeability along hard axis increases at low frequencies but decreases at high frequencies. The domain structure of the layered films becomes simple with decreasing the layer thickness, and the films show high permeability (>10,000) and good frequency characteristics. However, for the films with large Hk (≥1.3 Oe), the permeability dose not show clear structure dependence. A simple calculation based on Landau-Lifshitz model shows that rotational permeability at high frequencies is deteriorated when the magnetization direction is deviated from easy axis. It is found that the films having both high permeability and good frequency characteristics can be obtained by optimizing the multi-layered structure.