イオン打込みYIG薄膜の光磁気効果―水素中アニーリング依存性―

抄録

The photoinduced effect of this study is presented as the decrease ΔH_p of ferromagnetic resonance field of surface spin wave modes in an ion-implanted layer of YIG films during light irradiation. The H₂⁺ or He⁺-implanted films are annealed in a hydrogen atmosphere. The results with annealing show various behaviors of ΔH_p caused by implanted and diffused hydrogen, and the formation of large anisotropy in the surface layer of He⁺ -implanted films. Proposed models on the changes of chemical reaction between hydrogen and ferrous ion and the origin of the large anisotropy are discussed.