A study of grain orientation of Alkali doped polycrystalline YBCO ceramics using an EBSD technique

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Abstract

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.

Original languageEnglish
Pages (from-to)411-418
Number of pages8
JournalCrystal Engineering
Volume5
Issue number3-4 SPEC.
DOIs
Publication statusPublished - 2002 Jan 1

Keywords

  • Alkali doping
  • EBSD
  • Polycrystals
  • YBCO

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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