Micromagnetic Simulation on Effect of Ampere Field and External Field on Dynamics of Spin Transfer Torque Switching

Author

Ito, K. ; Devolder, T. ; Chappert, C. ; Carey, M.J. ; Katine, J.A.

Author_Institution

Hitachi Europe, Ltd., Cambridge

fYear

2006

fDate

8-12 May 2006

Firstpage

711

Lastpage

711

Abstract

The effect of the Ampere field and the external field on the dynamics of the spin transfer torque (STT) magnetisation switching process calculated by full micromagnetic simulation at finite temperature is reported. The following three cases are studied: (1) parallel (P) to anti-parallel (AP) switching with large current, (2) AP to P switching with small current, and (3) P to AP switching with small current when the external magnetic field is applied to the hard anisotropic axis. The system used in this study is CoFe/Ru/CoFe/Cu/NiFe. The domain structure of the material is also studied.

Keywords

cobalt alloys; copper; ferromagnetic materials; iron alloys; magnetic anisotropy; magnetic domains; magnetic switching; micromagnetics; nickel alloys; ruthenium; Ampere field; CoFe-Ru-CoFe-Cu-NiFe - Interface; domain structure; external field; hard anisotropic axis; micromagnetic simulation; spin transfer torque magnetisation switching; Anisotropic magnetoresistance; Europe; Laboratories; Magnetic fields; Magnetic recording; Magnetic switching; Magnetization; Micromagnetics; Space vector pulse width modulation; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2006. INTERMAG 2006. IEEE International

Conference_Location

San Diego, CA

Print_ISBN

1-4244-1479-2

Type

conf

DOI

10.1109/INTMAG.2006.376435

Filename

4262144