Title :
High speed switching in magnetic recording media
Author :
Chantrell, R.W. ; Hannay, J.D. ; Wongsam, M. ; Lyberatos, A.
Author_Institution :
Sch. of Electron. Eng. & Comput. Syst., Univ. of Wales, Bangor, UK
fDate :
3/1/1998 12:00:00 AM
Abstract :
The theoretical formalism behind the introduction of thermal activation into the micromagnetic approach is reviewed. The theory is introduced via an application to a single spin which shows a rapid increase of coercivity at short timescales of the order of nanoseconds. Interaction effects are shown to increase relaxation times. A model of thermally activated spin-waves is presented
Keywords :
coercive force; magnetic recording; magnetic relaxation; magnetisation reversal; spin waves; coercivity; interaction effects; magnetic recording media; magnetisation reversal; micromagnetic approach; relaxation times; single spin; thermal activation; thermally activated spin-waves; Coercive force; Damping; Energy barrier; Equations; Magnetic materials; Magnetic recording; Magnetic switching; Magnetization reversal; Micromagnetics; Pulse measurements;
Journal_Title :
Magnetics, IEEE Transactions on
