Title :
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
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);
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2441143
