Observation of fast magnetoelastic waves in thin yttrium-iron garnet wafers and epitaxial films
Gulyaev Yu. V., Zil'berman P. E., Kazakov G. T., Sysoev V. G., Tikhonov V. V., Filimonov Yu. A., Nam B. P., Khe A. S.
The fine structure of the interference bands of magnetostatic and ordinary electromagnetic waves, which is attributed to magnetoelastic resonance at phase velocities that exceed the velocity of sound in an unbounded crystal by an order of magnitude and more, has been observed experimentally for the first time in yttrium-iron garnet (YIG) wafers and films which are saturated in an external magnetic field H.