有機金属分解法で作製した(YRBi)3(FeGa)5O12磁性ガーネット膜の磁気異方性および磁気動特性

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2020/03/01

タイトル(英語): Magnetic Anisotropy and Dynamics of (YRBi)3(FeGa)5O12 Garnet Thin Films Fabricated by Metal Organic Decomposition Method

著者名: 齊藤　日菜（日本大学大学院理工学研究科電子工学専攻），弘中　祐哉（日本大学大学院理工学研究科電子工学専攻），芦澤　好人（日本大学理工学部電子工学科），中川　活二（日本大学理工学部電子工学科）

著者名(英語): Hina Saito (Nakagawa-Ashizawa Labs., Nihon University), Yuya Hironaka (Nakagawa-Ashizawa Labs., Nihon University), Yoshito Ashizawa (Nakagawa-Ashizawa Labs., Nihon University), Katsuji Nakagawa (Nakagawa-Ashizawa Labs., Nihon University)

キーワード: 磁性ガーネット，有機金属分解法，磁気異方性，ダンピング定数，磁気共鳴　　magnetic garnet，metal organic decomposition method，magnetic anisotropy，damping factor，magnetic resonance

要約(英語): Spin dynamics and magnetic characteristics of (YRBi)3(FeGa)5O12 thin films fabricated by metal organic decomposition (MOD) method is studied. The magnetic anisotropies of Y1.5R0.5Bi1Fe4Ga1O12 (R = Dy, Gd, or Eu) garnet films prepared by the MOD on Gd3Ga5O12 (GGG) single crystal substrates were analyzed, and the crystalized phases of the films were also evaluated by X-ray diffraction (XRD). It is found that magnetic anisotropy of the films can be induced by a lattice difference between the film and the substrate, even though the films are made by the MOD. The damping factor of a Y2Bi1Fe5O12 garnet film was measured by ferromagnetic resonance using co-planer waveguide, and the measured damping factor of the Y2Bi1Fe5O12 film made by the MOD on GGG substrate is 0.073. The value, which shows much larger than that of other garnets, must be caused by the less crystallinity and/or the fine structure of the films.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.140 No.3 （2020） 特集：光・熱・磁気の相互作用を利用した新規スピンデバイス・ストレージ

本誌掲載ページ: 119-124 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/140/3/140_119/_article/-char/ja/