Zusammenfassung
By low-temperature transmission electron microscopy we have found nanodomains in a polycrystalline Nb3Sn sample. We interpret that these nanodomains form due to a tetragonal distortion. Because twinning seems to be a prominent feature of the real structure of many high T-c superconductors, possible interactions between a twinned structure and superconductivity are briefly discussed. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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