Abstract

We have studied the transmission of 9-GHz microwave power through Ni single crystals cut in the (110) plane with the applied magnetic field along the [100] direction. Our studies were carried out in the FMR field region. The transmission of microwave power was observed to be greatly enhanced by the propagation of ultrasonic waves generated at the front surface of the sample by magnetoelastic coupling. The observed transmission peak has an envelope whose shape is similar to the FMR absorption line but which has a sharp dip at the field corresponding to the magnon-phonon dispersion curve crossover for the applied frequency ω.

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