Abstract
The new method of examination of microstructure - acoustic microscopy - was used for studying HTSC-materials (ceramics, monocrystals and think films). The obtained high-resolution images (with resolution up to 0.4mkm) visualize the specimen topography, variations of the local acoustic properties, in particular, surface and subsurface defects - cracks, twins, phase and structural discontinuities, peelings in films. For bulk specimens (monocrystals and ceramics) we obtained a quantitative characteristic - a local (on a section of 10x10mkm 2) Rayleigh wave velocity, which makes it possible, in particular, to characterize individual crystallites in ceramics.
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