The Dynamics Of Magnetization In Ferromagnetic Nanowire Driven By Spin-polarized Current

In recent years, magnetic material has been gradually come into the people vision. Theferromagnetic nanowire driven by spin-polarized current and magnetic field can cause magneticmaterials properties change, which will applied to real life, magnetic storage and sensors. In thispaper, we mainly investigate the the motion of domain wall, spin wave and magnetic soliton inthe ferromagnetic nanowire with injected spin-polarized current and magnetic field. Furthermore,we discuss their formation and properties. The main contents of this paper are the following:Firstly, we introduce the magnetization dynamics in ferromagnetic nanowire. Secondly, wediscuss the theory of spin-transfer torque. Finally, we mainly study two sections. The magneticrogue wave is obtained in a perpendicular anisotropic ferromagnetic nanowire with spin-transfertorque. We find that the rogue wave is unsuitably and gradually decay which is arose from thenonuniform exchange rate of energy and magnons. Nonautonomous helical motion ofmagnetization in ferromagnetic nanowire driven by spin-polarized current and magnetic fieldwill be presented. A critical condition is obtained analytically. Below the critical value, thedomain wall rotation stops finally Above the critical value, the domain wall open out the novelnonautonomous helical motion.