Magnetic Domain of Stepped Magneto-Impedance Sensor Controlled by a Normal Magnetic Field

カテゴリ: 論文誌(論文単位)

グループ名: 【E】センサ・マイクロマシン部門

発行日: 2018/01/01

タイトル(英語): Magnetic Domain of Stepped Magneto-Impedance Sensor Controlled by a Normal Magnetic Field

著者名: Tomoo Nakai (Industrial Technology Institute, Miyagi Prefectural Government)

著者名(英語): Tomoo Nakai (Industrial Technology Institute, Miyagi Prefectural Government)

キーワード: magnetic domain，magneto-impedance，normal field，stepped GMI，thin film

要約(英語): A thin-film magneto-impedance (MI) sensor has the unique property of a step-like magneto-impedance change, in the case where the sensor has an in-plane uniaxial inclined easy axis. A domain observation shows that the step-like change is due to a magnetization transition within three states, including the longitudinal single domain with parallel state, that with anti-parallel state and the inclined Landau-Lifshitz domain (ILLD). In a condition where the sensor has an easy axis of 70o relative to the short-side axis of the rectangular element, the transition is limited between the parallel and anti-parallel states despite the existence of a stable ILLD. Previous work showed that the application of a normal field could produce the ILLD state. This paper reports a control method for the magnetic domain by controlling the normal field. It is shown that the existence of a distributed canted angle relative to the normal direction in the normal field enhances the reconstruction of the ILLD domain state.

本誌: 電気学会論文誌E（センサ・マイクロマシン部門誌） Vol.138 No.1 （2018） 特集：センサ・マイクロマシン英文特集号

本誌掲載ページ: 23-29 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejsmas/138/1/138_23/_article/-char/ja/