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Surface elastic waves have been generated at 60 MHz by magnetostrictive coupling in yttrium iron garnet (YIG). The transducers were evaporated aluminum meander lines. For a YIG plate with the (110) axis normal to the free surface and propagation along the (001) axis, maximum coupling occurred for the static field parallel to the direction of propagation. The effect of the internal magnetic field gradient on the transducer efficiency and the signal delay is discussed.
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Voltmer et al. (1969) studied this question.
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