紀要論文 液相エピタキシー法による希土類置換磁性ガーネットの格子不整合と磁気ドメインの温度依存性について
Temperature Dependence of Lattice Mismatch and Magnetic Domain Structure of Rear Earth Substituted Iron Garnet Films Synthesized by Liquid Phase Epitaxy Technique

安達, 信泰

内容記述
A temperature dependence of the lattice mismatch between a Bi-Pr-substituted iron garnet film and a Gadolinium Gallium garnet (GGG) substrate was investigated in the temperature range from 90 K to 600 K. With decreasing temperature, the lattice constant of the film decreased faster than that of the substrate. A polarized microscope clearly shows the formation of the magnetic domain magnetized perpendicular to the film plane in the low temperature. The relation between the change of the lattice mismatch and the formation of the magnetic domain with decreasing temperature suggests that the stress-induced magnetic anisotropy is one of the reasons for formation of the stripe magnetic domain magnetized perpendicular to the film plane in the low temperature.
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