Influence of Calcining Temperature on Formation of the High-Tc Phase in the Bi-Pb-Sr-Ca-Cu-O System

Jun Takada, Toshio Egi, Kiichi Oda, Hitoshi Kitaguchi, Akiyoshi Osaka, Yoshinari Miura, Hiroyuki Ito, Yasunori Ikeda, Mikio Takano

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2 Citations (Scopus)

Abstract

The influence of the calcining temperature on the formation of the high-Tc phase and the electrical conductivity has been studied for the sample with a nominal composition of Bi0.96Pbg0.24Sr1.0Ca1.6Ox. the product in the sample calcined at 680°C was much different from that in the sample calcined at 800°C. Namely, Bi0.46Ca0.54-ySry1.1Ox(0.1<y<0.2), Bi10Ca7O22, Ca2PbO4, SrCO3 and CuO were formed at 680°C, while the low-Tc phase and Ca2PbO4 were mainly formed at 800°C. At 850°C, the fraction of the high-Tc phase increased more quickly in the sample calcined at 680°C than in the sample calcined at 800°C, and mostly monophasic high-Tc phase was obtained by the sintering at 850°C for 24h after the calcination at 680°C, however, that sample showed lower Tc(zero)=87K than the sample calcined at 800°C.

Original languageEnglish
Pages (from-to)54-59
Number of pages6
JournalJournal of the Japan Society of Powder and Powder Metallurgy
Volume37
Issue number1
DOIs
Publication statusPublished - 1990

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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