Title :
The magnetostatic waves in ferrite film with losses
Author :
Vyzulin, S.A. ; Rosenson, A.E. ; Shekh, S.A.
Author_Institution :
Microwave Lab., Kuban State Univ., Krasnodar, Russia
Abstract :
The influence of relaxation processes on dispersion equation solutions for surface and volume magnetostatic waves (MSW) propagating in a ferrite film is theoretically investigated. It is shown that dissipation is the main reason for the appearance of complementary MSW branches in frequency intervals which adjoin standard branches in spectra. The existence of threshold MSW wave numbers which upper bound the spectra of possible wave numbers is established. Asymptotic frequencies anf frequencies corresponding to the threshold values of wave numbers are calculated. The effects of dissipation on the ranges in which MSW exist are calculated. The frequency dispersion of the loss spectra is also calculated
Keywords :
ferrites; losses; magnetic relaxation; magnetic thin films; magnetostatic waves; asymptotic frequencies; complementary MSW branches; dispersion equation solutions; ferrite film; frequency dispersion; loss spectra; losses; magnetostatic waves; relaxation processes; surface MSW propagation; threshold MSW wave numbers; volume MSW propagation; Equations; Ferrite films; Finline; Frequency; Magnetic analysis; Magnetostatic waves; Microwave Theory and Techniques Society; Microwave theory and techniques; Saturation magnetization; Surface waves;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
