Measurement of symmetry of wavefunction which contributes to electric-field induced magnetization switching

2015 Fiscal Year Final Research Report

• Project/Area Number: 24560364
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Electronic materials/Electric materials
• Research Institution: Gunma University
• Principal Investigator: Sakurai Hiroshi 群馬大学, 大学院理工学府, 教授 (80251122)
• Co-Investigator(Renkei-kenkyūsha): SUZUKI Kosuke 群馬大学, 大学院理工学府, 助教 (90580506) ; SAKURAI Yoshiharu 高輝度光科学研究センター, 利用研究促進部門, 主席研究員 (90205815) ; ITOU Masayoshi 高輝度光科学研究センター, 利用研究促進部門, 副主幹研究員 (10344392)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 磁気スイッチング / スピントロニクス / 軌道磁気モーメント / スピン磁気モーメント / 磁気コンプトン散乱

Outline of Final Research Achievements

A spin specific magnetic hysteresis (SSMH) curve and an orbital specific magnetic hysteresis (OSMH) curve are obtained for Au/Fe/MgO multilayers by magnetic Compton scattering and SQUID magnetometer measurements. The SSMH curve with each contribution of magnetic quantum number |m|=0, 1, and 2 states is obtained by decomposition analyses of magnetic Compton profiles. Residual magnetization is observed for the SSMH curve with magnetic quantum number |m|=2 and the OSMH curve. Although the SQUID magnetometer measurements do not show perpendicular magnetic anisotropy (PMA), the SSMH curve with magnetic quantum number |m|=2 and OSMH curve show switching behaviors of PMA.

Free Research Field

工学