Title :
General spin wave instability theory
Author :
Nazarov, Alexey V. ; Cox, Richard G. ; Patton, Carl E.
Author_Institution :
Dept. of Phys., Colorado State Univ., Fort Collins, CO, USA
fDate :
7/1/2001 12:00:00 AM
Abstract :
The theory of spin wave instability for magnetic insulators is extended to include generalized anisotropy, ellipsoidal shape, and a microwave pumping field with a general polarization for both first and second order processes. Representative results are given for the instability threshold microwave field amplitude vs. static field and the corresponding critical modes for a Zn-Y hexagonal ferrite thin disk
Keywords :
ferrites; magnetic anisotropy; spin waves; yttrium compounds; zinc compounds; Zn-Y hexagonal ferrite thin disk; critical modes; ellipsoidal shape; first order processes; general polarization; general spin wave instability theory; generalized anisotropy; instability threshold microwave field amplitude; magnetic insulators; microwave pumping field; second order processes; Anisotropic magnetoresistance; Ferrites; Insulation; Magnetic analysis; Magnetic anisotropy; Magnetic materials; Magnetostatic waves; Microwave theory and techniques; Perpendicular magnetic anisotropy; Shape;
Journal_Title :
Magnetics, IEEE Transactions on
