Title :
Thermal activation of spin wave modes in Co based multilayers
Author :
Wongsam, M.A. ; Chantrell, R.W.
Author_Institution :
Comput. Magnet. Group, Univ. of Wales, Bangor, UK
fDate :
7/1/1998 12:00:00 AM
Abstract :
An extension of the micromagnetic fluctuation theory is used to model the thermal excitations of spin wave modes in Co based magnetic/non-magnetic (M/NM) multilayers. Results are obtained for samples with continuous and granular magnetic layers, clearly demonstrating thermal excitations of increasing amplitude and involving higher frequencies as the temperature is increased. Also, the response is greater at lower values of the external field
Keywords :
cobalt; magnetic multilayers; spin waves; Co; Co-based magnetic/nonmagnetic multilayer; continuous magnetic layer; granular magnetic layer; micromagnetic fluctuation theory; spin wave mode; thermal activation; Equations; Fluctuations; Magnetic anisotropy; Magnetic multilayers; Magnetostatic waves; Micromagnetics; Nonhomogeneous media; Perpendicular magnetic anisotropy; Temperature; Thermodynamics;
Journal_Title :
Magnetics, IEEE Transactions on
