Electromagnetic excitation of ultrasonic oscillations by yttrium iron garnet films on gallium gadolinium garnet substrates

被引:0
作者
V. M. Sarnatskii
I. O. Mavlonazarov
L. V. Lutsev
机构
[1] St. Petersburg State University,Ioffe Physical Technical Institute
[2] Russian Academy of Sciences,undefined
来源
Technical Physics Letters | 2014年 / 40卷
关键词
Domain Wall; Yttrium Iron Garnet; Film Plane; Ultrasonic Oscillation; Gallium Gadolinium Garnet;
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摘要
We have studied the phenomenon of contactless excitation of ultrasonic oscillations by thin yttrium iron garnet (YIG) films on gallium gadolinium garnet (GGG) substrates upon application of the superposition of a constant magnetic bias field and alternating magnetic field. Dimensional resonance effects that cannot be explained in the framework of existing theoretical notions have been discovered, in particular, in dependences of the amplitude of excited longitudinal oscillations on the YIG film thickness, frequency of ultrasound, and degree of homogeneity and strength of the magnetic bias field. It is suggested that the observed phenomenon is caused by resonant participation of the intrinsic oscillations of domain walls in the excitation of ultrasound.
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页码:622 / 624
页数:2
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