Polycrystalline KClO3-, K2CO3-, Rb2CO3-doped and undoped YBa2Cu3O7-x (YBCO) ceramic high-Tc 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 Rb2CO3 and K2CO3 additives do not exhibit a very pronounced texture (i.e. preferred orientation). On the polycrystalline KClO3-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 KClO3-additive during the preparation process.
ASJC Scopus subject areas
- 化学 (全般)