Co基アモルファスリボンの熱処理による磁気異方性と応力磁化特性(ソフト磁性材料)

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Stress-magnetization property changes in Co-based amorphous ribbons due to heat treatment were investigated. Co-based amorphous ribbons with a negative magnetostriction constant showed unique magnetization behavior under stress, such a stress-insensitive region and a peculiar magnetization increment. Our interpretation of the appearance of the unique stress-magnetization behavior is that three factors, i. e., an induced anisotropy field due to field annealing, a magnetoelastic anisotropy field under stress, and an exciting magnetic field along the sample axis, are responsible. A simple magnetization rotation process using the three factors shows a tendency for the stress-insensitive region to expand with larger induced magnetic anisotropy as same as the experimental results, however, it did not show any unusual magnetization increment. In interpreting the unique stress-magnetization characteristics, therefore, a transient magnetization process should be considered to be like a magnetic domain ramification and/or its reordering in conjunction with the above three factors.
社団法人日本磁気学会の論文
2003-04-01