The Response of an Uniaxial Ferromagnetic Nanoparticle to a Spinpolarized Current

Abstract

The actuality of the considered problem is originated from the practically reasons firstly. Since bistable states of ferromagnetic particle magnetic moment can be associated with the binary bit, such particles are widely used in modern media-devices. In this regard one should underline the patterned media HDD and MRAM devices. The writing process here physically needs the remagnetization of a particle, which can be performed in a few ways. The simplest of them imply the application of the external field. But actually the remagnetization can be assisted by heating or spin-polarized current.