ゾルゲル法によるBi：YIG／SiO_2積層膜の形成と磁気及び磁気光学特性

摘要

Recently, composite films consisting of magnetic garnet materials and dielectric materials, which were fabricated by aerosol deposition method, were studied for realizing novel magneto-optic materials for shorter wavelength of light near blue region. Inclusion of dielectric material was found to be effective for reducing the optical losses of the film in visible wavelengths. In this study, to materializing novel MO films which are able to operate in blue optical region, magnetophotonic crystals with the composite film as a defect layer were fabricated by the sol-gel method, and their fundamental magnetic, optical and MO responses were investigated experimentally.%これまで，我々は緑色から青色の可視光領域で磁気光学材料の光吸収低減を目的とし，コンポジット膜の研究を行ってきた．エアロゾルデポジション法で磁性ガーネット材料と誘電体材料のコンポジット膜を作製した結果，誘電体材料の割合を増加させることが光吸収低減に効果的なことを確認した．本研究では，青色の可視光領域における磁気光学材料の開発のため，ゾルゲル法でコンポジット膜を形成した．その膜を磁性フォトニック結晶の欠陥層に導入し，磁気、光学および磁気光学特性について調査した．