Title :
Non-linear acoustomagnetic wave instability under resonance magnetoacoustic interaction
Author :
Bugaev, A.S. ; Gorsky, V.B.
Author_Institution :
Moscow Inst. of Phys. & Technol., Russia
Abstract :
This articles deals about non-linear acoustomagnetic wave instability under resonance magnetoacoustic interaction. The nonlinear instability threshold of dipole magnetostatic waves has been investigated experimentally for MSW exciting in the range of magnetic fields and frequencies where exchange MSW are in phase synchronism with transversal acoustic waves. Nonlinear characteristics of the magnetostatic mode spectrum of planar ferrite resonators has been investigated. The nonlinearity threshold oscillations have been observed experimentally for dipole magnetostatic oscillations exciting in the range of frequencies and magnetic fields where resonant interaction of spin-wave modes with transversal acoustic modes takes place.
Keywords :
acoustic resonators; ferrites; ferromagnetic resonance; garnets; magnetic thin films; magnetoacoustic resonance; magnetostatic waves; ultrasonic waves; yttrium compounds; YFe5O12; YIG; dipole magnetostatic oscillations; dipole magnetostatic waves; magnetic fields; magnetostatic mode spectrum; nonlinear acoustomagnetic wave instability; nonlinear instability threshold; nonlinearity threshold oscillations; phase synchronism; planar ferrite resonators; resonance magnetoacoustic interaction; spin wave modes; transversal acoustic modes; transversal acoustic waves; Acoustic waves; Ferrite films; Frequency synchronization; Magnetic fields; Magnetic films; Magnetic resonance; Magnetization; Magnetostatic waves; Surface reconstruction; Surface treatment;
Conference_Titel :
Ultrasonics, 2003 IEEE Symposium on
Print_ISBN :
0-7803-7922-5
DOI :
10.1109/ULTSYM.2003.1293427
