Electric Field-Induced Magnetization Switching in CoFeB-MgO—Static Magnetic Field Angle Dependence

Author

Kanai, Sekitoshi ; Yamanouchi, Masato ; Ikeda, Shoji ; Nakatani, Yusuke ; Matsukura, Fumihiro ; Ohno, Hideo

Author_Institution

Lab. for Nanoelectron. & Spintronics, Tohoku Univ., Sendai, Japan

Volume

50

Issue

1

fYear

2014

fDate

Jan. 2014

Firstpage

1

Lastpage

3

Abstract

We investigate switching probabilities of electric field-induced magnetization switching in CoFeB/MgO based magnetic tunnel junction with perpendicular magnetic easy axis under static magnetic field with various directions. The switching takes place through magnetization precession with the period determined by the magnitude of the in-plane component of magnetic field. The experimental results are well reproduced by macro-spin simulation. The simulation reveals that decoherence induced by thermal fluctuations and/or other effects limit the switching probabilities in the present system.

Keywords

cobalt compounds; interface magnetism; iron compounds; magnesium compounds; magnetic switching; magnetic tunnelling; magnetisation; CoFeB-MgO; based magnetic tunnel junction; electric field induced magnetization switching; macrospin simulation; magnetic field in-plane component; perpendicular magnetic easy axis; static magnetic field angle dependence; switching probability; thermal fluctuation; Junctions; Magnetic switching; Magnetic tunneling; Magnetization; Perpendicular magnetic anisotropy; Switches; CoFeB/MgO; electric field-induced magnetization switching; perpendicular magnetic tunnel junction (MTJ);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2278559

Filename

6692918