MAGNETOELASTIC WAVES IN PULSED MAGNETIC FIELDS

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Abstract
An analysis of magnetoelastic waves propagating in spatially uniform, time varying magnetic fields is carried out using small signal momentum conservation. The equations of motion are cast in coupled mode form and the usual weak coupling (between positive and negative waves) approximation is made. The magnon/phonon conversion efficiency for propagation in time gradients is then obtained by analogy to the result previously found for the case of spatial gradients. Experiments which support the theory are described briefly.