Separate quantitative evaluation of degree of order and perpendicular magnetic anisotropy for disorder and order portion in FePt granular films
Separate quantitative evaluation of degree of order and perpendicular magnetic anisotropy for disorder and order portion in FePt granular films
复制标题
FePt颗粒薄膜中无序部分和有序部分的有序度和垂直磁各向异性的单独定量评价
DOI：
10.1063/9.0000139
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发表时间：
2021
期刊：
影响因子：
1.6
通讯作者：
S. Saito
中科院分区：
文献类型：
--
作者：
Takashi Saito;K. Tham;R. Kushibiki;T. Ogawa;S. Saito
研究了不同晶界材料的FePt颗粒膜的有序度和垂直磁各向异性随磁性层厚度的变化关系。根据对具有30体积%的恒定GBM体积的颗粒膜的分析，在FePt颗粒膜中有序、无序和非外延部分共存。从这些部分的单独定量评价中，发现以下内容：1）无序和有序部分的有序度和Ku能的大小相对于dmag是恒定的，而膜平均评价导致有序度和Ku能对dmag的依赖性以及颗粒直径和有序度之间的正相关性，2）对于有序部分，有序度与Ku_（10）的大小呈线性相关。3）有序度与Ku_（10）的大小有关，有序度与GBM有关。
The dependence of the degree of order and perpendicular magnetic anisotropy (Ku⊥) on magnetic layer thickness (dmag) for FePt granular films with various grain boundary materials (GBMs) were investigated. According to the analysis for granular films with a constant GBM volume of 30 vol%, the order, disorder, and non-epitaxial portions co-existed in the FePt granular films. From the separate quantitative evaluation for these portions, the following was found; 1) the degree of order and magnitudes of Ku⊥ for disorder and order portions against dmag were constant, while the film average evaluation resulted in the dependence of the degree of order and Ku⊥ on dmag and the positive correlation between the grain diameter and the degree of order, 2) for the order portion, Ku⊥ had linear correlation with the degree of order, 3) the magnitude of Ku⊥ and the degree of order for the order portion depended on GBM.