Critical Current Density and Ferromagnetic Resonance Affected by Perpendicular Anisotropy in Spin Valve

Author

Congpu Mu ; Jianghong Xu ; Qingfang Liu ; JianBo Wang

Author_Institution

Sch. of Sci., Yanshan Univ., Qinhuangdao, China

Volume

51

Issue

11

fYear

2015

Firstpage

1

Lastpage

3

Abstract

Ferromagnetic resonance (FMR) and magnetization-switching-induced spin-transfer torque (STT) in spin valve had been investigated by 3-D micromagnetic simulations. The simulation results show that three resonance peaks attributing to various resonance modes were found. FMR frequencies can be controlled by the perpendicular anisotropy strength. At the same time, the critical current density of STT-induced magnetization switching can be obviously reduced by tuning the perpendicular anisotropy constant too.

Keywords

critical currents; current density; ferromagnetic resonance; magnetic switching; micromagnetics; perpendicular magnetic anisotropy; spin valves; torque; 3D micromagnetic simulations; FMR frequencies; critical current density; ferromagnetic resonance; magnetization-switching-induced spin-transfer torque; perpendicular anisotropy strength; resonance modes; resonance peaks; spin valve; Anisotropic magnetoresistance; Critical current density (superconductivity); Magnetic resonance; Magnetization; Spin valves; Switches; FMR; Ferromagnetic resonance (FMR); Micromagnetic; Perpendicular anisotropy; Spin transfer torque; micromagnetic; perpendicular anisotropy; spin-transfer torque (STT);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2015.2441143

Filename

7117396