Orientation of embedded y2BaCuO5 particles within the YBa2Cu3Ox matrix in melt-textured YBCO superconductors

A. Koblischka-Veneva, M. R. Koblischka, N. Hari Babu, D. A. Cardwell, F. Mücklich, M. Murakami

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Abstract

Automated electron backscatter diffraction (EBSD) was employed to study the local orientations of embedded Y2BaCuO5 (Y-211) particles within the YBa2Cu3Ox (Y-123) superconducting matrix of large grain, melt-textured Y-Ba-Cu-O (YBCO) samples. High-quality Kikuchi patterns were obtained, enabling automated mapping of the individual crystal orientations and a two-phase analysis of the samples. Investigations were performed on a variety of melt-textured YBCO samples, including samples with different element additions. We observe from the maps that the embedded Y-211 particles do not have any preferred orientation in melt-textured YBCO with (0 0 1) orientation, and that the YBCO growth is not altered for certain orientations of the Y-211 particles. In samples with (1 0 0) orientation, on the other hand, we observe only a small misorientation within the YBCO matrix, and the embedded Y-211 particles do not exhibit any texture. We can conclude from the EBSD maps obtained that the formation of small Y-211 particles does not disturb the Y-123 matrix growth, whereas the presence of large Y-211 particles leads, significantly, to the formation of subgrains.

Original languageEnglish
Pages (from-to)1714-1719
Number of pages6
JournalPhysica Status Solidi C: Conferences
Volume2
Issue number5
DOIs
Publication statusPublished - 2005 Nov 8

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ASJC Scopus subject areas

  • Condensed Matter Physics

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