Title :
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
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;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.376435
