Title :
Finite temperature micromagnetic modeling applied to spin valves
Author_Institution :
Seagate Technol., Bloomington, MN, USA
Abstract :
An approach to rigorously include equilibrium effects at finite temperatures in micromagnetic systems is introduced. Applications to patterned soft magnetic structures-show good agreement with experiments, qualitatively and quantitatively different from what is obtained using a standard zero-temperature micromagnetic approach. Examples of simulations of spin valve structures show large increase in magnetic noise, due to fluctuations in both reference and free layers, with reduced structure dimensions.
Keywords :
Monte Carlo methods; fluctuations; magnetic heads; magnetisation; micromagnetics; soft magnetic materials; spin valves; computational micromagnetics; equilibrium effects; finite temperature micromagnetic modeling; magnetic noise; magnetic recording heads; patterned soft magnetic structures-show; spin valve structures; Computational modeling; Equations; Fluctuations; Magnetic heads; Magnetostatics; Micromagnetics; Saturation magnetization; Soft magnetic materials; Spin valves; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.988903
