Abstract
The longitudinal and transverse phonon generation by ferromagnetic resonance in a thin film, which is subjected to both spin-pinned and spin-unpinned boundary conditions, is calculated. An arbitrary acoustic-impedance condition at the film surface which is bonded to a nonmagnetic rod is used. The spin-unpinned case gives more power transmitted into the rod than the spin-pinned case under otherwise optimized conditions. In addition the optimum acoustic impedance of the rod for maximum power transmission is much smaller than the impedance of the film.
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