Single crystals of (Bi, Pb)2Sr2CaCu2Oy grown by the flux method using KCl as the flux

Toetsu Shishido, Daisuke Shindo, Naoki Toyota, Kazutoshi Ukei, Tsuguo Fukuda

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1 Citation (Scopus)

Abstract

Single crystals of Bi-based oxide superconductors including Pb were successfully obtained by the flux method using KCl as a flux. Nitrates of Bi, Pb, Sr, Ca and Cu were used as raw materials. Carefully prepared solute calcined at a low temperature (500 °C) was used with a KCl flux. The solvation of this solute to the KCl flux proceeded very smoothly. Platy single crystals of Bi1.8Pb0.4Sr1.6Ca1.2Cu2Oy having a smooth surface and good crystallinity were extracted near the melt surface, and bulky crystals of Bi1.8Pb0.5Sr1.5Ca1.2Cu2Oy were solidified at the bottom of the crucible. Basically, these as-grown crystals belong to so-called 2:2:1:2 phase, (Bi, Pb)2Sr2CaCu2Oy, and show superconducting transitions at 83.5 K and 88 K for platy and bulky crystals respectively.

Original languageEnglish
Pages (from-to)117-120
Number of pages4
JournalJournal of Alloys and Compounds
Volume218
Issue number1
DOIs
Publication statusPublished - 1995 Feb 15

Keywords

  • Crystal growth
  • KCl flux
  • Single crystals
  • Superconductivity

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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