Abstract
New developments for the study of acoustic paramagnetic resonance (APR) and hypersonic attenuation in solids at 9.4 GHz are presented. Efficient electro-acoustic conversion for the transverse mode was achieved together with the generation of longitudinal waves in a high-quality CdS thin film placed parallel to the electric field in the re-entrant cavity. An electron bombardment set up was used for the preparation of the thin films which have a typical thickness of about 3000 AA. Reflection electron diffraction studies showed that the orientation of the layers is little influenced by the substrate so that it will easily be possible to use this method to the APR and attenuation studies in different crystals.
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