Partial Bi-Sr-Cu-O subsolidus diagram at 800°C with and without lithium carbonate

J. A. Saggio, K. Sujata, J. Hahn, S. J. Hwu, Kenneth R Poeppelmeier, Thomas O Mason

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Abstract

Solid-phase relationships have been determined for the Bi 2O 3-SrO-CuO system at 800°C in air with and without Li 2CO 3 mineralizer. Two ternary compounds were detected with Bi:Sr:Cu ratios of approximately 2:2:1 and a solid-solution phase 11-x:9+x:5 with 0≤x≤0.4. The solid-solution phase is a 9 K superconductor at x=0.4. Two additional compounds with Bi:Sr:Cu ratios of approximately 4:9:1 and 2:7:2 are apparently stabilized by the presence of Li 2CO 3, but do not form without it. X-ray crystallographic data are provided for each compound. Ramifications for quaternary Bi:Sr:Ca:Cu-0 superconductors are discussed.

Original languageEnglish
Pages (from-to)849-853
Number of pages5
JournalJournal of the American Ceramic Society
Volume72
Issue number5
DOIs
Publication statusPublished - May 1989

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Keywords

  • Bismuth
  • Copper
  • Phases
  • Strontium
  • Superconductivity

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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