高効率な電流誘起磁化反転技術の開発

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): Progress on Efficient Current Induced Magnetization Switching

著者名: 加藤　剛志（名古屋大学工学研究科電子工学専攻），岩田　聡（名古屋大学未来材料・システム研究所），大島　大輝（名古屋大学未来材料・システム研究所）

著者名(英語): Takeshi Kato (Department of Electronics, Nagoya University), Satoshi Iwata (Institute of Materials and Systems for Sustainability, Nagoya University), Daiki Oshima (Institute of Materials and Systems for Sustainability, Nagoya University)

キーワード: 電流誘起磁化反転，熱アシスト，希土類-遷移金属，電圧アシスト　　current induced magnetization switching，thermal assist，rare-earth transition metal，voltage assist

要約(英語): As efficient current induced magnetization switching schemes, thermally assisted spin transfer torque (STT) switching, spin orbit torque (SOT) switching of rare-earth transition metal films, and electric-field assisted SOT switching were briefly reviewed. For thermally assisted STT switching, hybrid memory layer with a low Curie temperature (TC) and high TC layers were found to be effective to reduce the critical current density Jc without sacrificing the thermal stability Δ at room temperature. In SOT switching of GdFeCo, the large SOT was confirmed even at the compensation composition of GdFeCo. In SOT switching of MgO / Co / Pt films, the switching current density Jc was confirmed to be modified around 20% by applying an electric field of 1 V/nm through the insulator film.

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: 106-112 p

原稿種別: 解説論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/140/3/140_106/_article/-char/ja/