Microstructural studies of K2CO3 and Rb 2CO3 doped YBCO HTSC

A. Koblischka-Veneva, M. R. Koblischka

研究成果: Conference article査読

2 被引用数 (Scopus)


The influence of Me2CO3 (Me = K or Rb) additions on the microstructural morphology of YBa2Cu3Ox (YBCO) HTSC with nominal composition Y(1-0.2x)Ba (2-0.2x)MxCu3Oy (x = 0-2.0) were investigated by means of orientation imaging microscopy which provides a method for measuring a large number of individual grain orientations and relating them directly to the microstructural features by means of evaluating electron backscatter Kikuchi patterns in scanning electron microscopy. We investigated the influence of the alkali additions on the grain orientation distributions of YBCO. The samples are characterized by grain orientation maps, and pole and inverse pole figures. Finally, the grain orientation distribution functions are obtained from the measured data. Within a certain range of doping (up to 5 wt.% in the initial batch), the grain sizes are found to increase as compared to pure YBCO, accompanied by an improvement of the superconducting properties (Tc). It is shown that the additions of alkali carbonates do not introduce any preferred grain orientations in YBCO HTSC in the entire doping range.

ジャーナルPhysica C: Superconductivity and its applications
出版ステータスPublished - 2003 10月 1
イベントProceedings of the 15th International Symposium on Superconduc - Yokohama, Japan
継続期間: 2002 11月 112002 11月 13

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学


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