Abstract
Polycrystalline KClO 3-, K 2CO 3-, Rb 2CO 3-doped and undoped YBa 2Cu 3O 7− x (YBCO) ceramic high- T c superconductors were examined using electron backscatter diffraction (EBSD) technique. We present orientation maps and pole figures of the samples. It is shown that the pure YBCO samples and the ones with Rb 2CO 3 and K 2CO 3 additives do not exhibit a very pronounced texture (i.e. preferred orientation). On the polycrystalline KClO 3-doped YBCO samples we find two major grain orientations (0 0 1) and (1 0 0) normal to the sample surface while the pure YBCO sample does not exhibit any orientation maxima. This observation is ascribed to the effect of a liquid phase due to the KClO 3-additive during the preparation process.
Published Version
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