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Acoustic imaging of high‐temperature superconducting materials
Author(s) -
Bukhny M. A.,
Chernosatonskii L. A.,
Maev R. G.
Publication year - 1990
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/j.1365-2818.1990.tb03065.x
Subject(s) - superconductivity , materials science , high temperature superconductivity , condensed matter physics , nanotechnology , physics
SUMMARY A new method of microstructure examination, acoustic microscopy, was used to study high‐temperature superconducting materials. The high‐resolution images obtained (up to 0.4 μm resolution) visualize the specimen topography, variations in local acoustic properties, in particular surface and subsurface defects such as cracks, twins, phase and structural discontinuities and film peeling. For bulk specimens a quantitative characteristic was obtained: a local Rayleigh wave velocity (within an area of 10 × 10 μm), which makes it possible, in particular, to characterize individual crystallites in ceramics.