Study on Static and High Frequency Magnetic Properties of Various Thick Fe100-xGax Polycrystalline Films (x=18.5, 24.9, and 33.4)

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: 2021/02/01

タイトル(英語): Study on Static and High Frequency Magnetic Properties of Various Thick Fe100-xGax Polycrystalline Films (x=18.5, 24.9, and 33.4)

著者名: Yasushi Endo (Graduate School of Engineering, Tohoku University/Center for Science and Innovation Spintronics, Tohoku University/Center for Spintronics Research Networks, Tohoku University), Yasuyuki Kawabe (Graduate School of Engineering, Tohoku Universi

著者名(英語): Yasushi Endo (Graduate School of Engineering, Tohoku University/Center for Science and Innovation Spintronics, Tohoku University/Center for Spintronics Research Networks, Tohoku University), Yasuyuki Kawabe (Graduate School of Engineering, Tohoku Universi

キーワード: Fe-Ga thin film，Saturation magnetostriction，In-plane effective damping constant

要約(英語): This paper describes static and high frequency magnetic properties of Fe100-xGax polycrystalline films (x=18.5, 24.9, and 33.4) with various thickness between 5-100 nm. The saturation magnetostriction (λs) for each x become lower than those of Fe-Ga single crystal films and Fe-Ga bulk alloy regardless of the film thickness, which may be attributed to the crystalline orientation in these films. On the other hand, for every x, the relationship between the in-plane effective damping constant (α//) and the film thickness is almost same. Their values become higher than those of other Fe-binary alloy thin film with soft magnetic properties, which may be attributed to the coexistence of both intrinsic and extrinsic damping. These results suggest that the reduction of α// is one of the most important for the high-frequency device applications of Fe100-xGax polycrystalline films with various film thickness.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.141 No.2 （2021） 特集：ナノスケール磁性体の構造・組織解析と創製に関する動向と展望

本誌掲載ページ: 118-122 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/141/2/141_118/_article/-char/ja/