Effect of Ba Addition on the Formation of the High-Tc Phase in the Bi, Pb-Sr-Ca-Cu-O System

Jun Takada, Hitoshi Kitaguchi, Kiichi Oda, Akiyoshi Osaka, Yoshinari Miura, Yasunori Ikeda, Mikio Takano, Yoshio Oka, Naoichi Yamamoto, Yoichi Tomii, Yasuo Takeda

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3 Citations (Scopus)


The effect of Ba addition on the formation and the critical temperature Tc of the high-Tc superconductor in the Bi, Pb-Sr-Ca-Cu-O system was studied. A series of samples Bi0.7Pb0.3Sr1-αBaαCaCu1.8Ox were prepared by the conventional ceramic method. High-Tc phase (c ≅ 37Å) was formed without coexistance of low-Tc phase (c ≅ 30Å) and 24Å phase in the sample of α ≤ 0.5 by the heat treatment at 845°C for 45-140h even though BaPb0.75Bi0.25O3 and (Sr, Ca)3Cu5Ox were a little remained. The electrical resistance of the sample with a composition of α=0.1 heated at 845°C for 140h dropped to zero at 105K and diamagnetic response was also observed. It was found that the addition of a small amount of Ba promoted the formation of high-Tc phase but Ba2+ ion was hardly substituted in the high-Tc phase.

Original languageEnglish
Pages (from-to)1003-1009
Number of pages7
JournalJournal of the Japan Society of Powder and Powder Metallurgy
Issue number9
Publication statusPublished - 1988

ASJC Scopus subject areas

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


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