Formation of the High-Tc Phase in the Lead-Rich Sample in the Bi-Pb-Sr-Ca-Cu-O System

Jun Takada, Fumine Shitani, Hitoshi Kitaguchi, Kiichi Oda, Akiyoshi Osaka, Yoshinari Miura

Research output: Contribution to journalArticle

Abstract

The formation of the high-Tc phase and the electrical property have been studied for the Pb-rich sample with a nominal composition of Bi:Pb:Sr:Ca:Cu= 0.726:0.374:1.0:1.0:1.65 sintered at temperature range between 840 and 853°C. The sample calcined at 800°C for 12h consists of a large amount of Ca2PbO4 and CuO beside the low-Tc phase. The low-Tc phase increases rapidly in an early stage of sintering and then decreases through a maximum as sintering is extended. On the other hand, the high-Tc phase increases much gradually in comparison with that in the Pb-poor sample of Bi:Pb:Sr:Ca:Cu=0.96:0.24:1.0:l.l:1.6 reported previously. The samples sintered in the temperature range from 845 to 853°C show Tc of about 110K, independent of sintering temperature.

Original languageEnglish
Pages (from-to)108-113
Number of pages6
JournalJournal of the Japan Society of Powder and Powder Metallurgy
Volume37
Issue number1
DOIs
Publication statusPublished - Jan 1 1990

ASJC Scopus subject areas

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

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