Liquid-phase-assisted synthesis of single-thallium-layer superconductors

Y. F. Li, Z. Z. Sheng, Nan Chen, S. E. Dorris, Michael T. Lanagan, K. C. Goretta

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11 Scopus citations

Abstract

TlBa2Ca2Cu3Ox (Tl-1223) powder was synthesized in O2 from a mixture of Tl2O3 and Ba2Ca2Cu3Ox. The peritectic melting point of Tl-1223 in O2 is 905°C. It was found that the maximum phase conversion to the Tl-1223 phase occurred at 895-900°C. A small concentration of liquid was present at that temperature. Because of the rapid kinetics of Tl-1223 formation, CaO and BaCuO2 phases became isolated from the Tl2O3 and thus remained in the final microstructure. In samples heated at 895°C, the CaO and BaCuO2 proved to be sufficiently small to act as flux-pinning sites.

Original languageEnglish (US)
Pages (from-to)1057-1064
Number of pages8
JournalMaterials Research Bulletin
Volume29
Issue number10
DOIs
StatePublished - Jan 1 1994

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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