Effect of Ba addition to the High-Tc Phase in the Bi-Pb-Sr-Ca-Cu-O System (II)

Jun Takada, Kiichi Oda, Toshio Egi, Masashi Fujiwara, Hitoshi Kitaguchi, Yoshinari Miura, Hiromasa Mazaki, Yoichi Tomii, Yasunori Ikeda, Zenji Hiroi, Mikio Takano

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Abstract

The effects of Ba-addition to the high-Tc phase in the Bi-Pb-Sr-Ca-Cu-O system have been studied for starting compositions of Bi:Pb:(Sr1−x, Bax): Ca:Cu=0.96:0.24:1.0:1.0:1.6 with x=0 to 0.30 heated at 845 or 850°C. The characterization of the samples has been made by XRD, DTA, the measurements of DC electrical resistivity and AC susceptibility, SEM and WDX. The Ba-addition in the range of 0.005≦x≦0.10 promotes the formation of the high-Tc phase due to lowering of the partial melt. Tc increases to 112K for the sample with low Ba contents, while Ba-free sample exhibits Tc=106K. The tetragonal lattice constants are a=5.412 Å for all samples, but c=37.10 Å and 37.20 Å for x=0 and 0.2, respectively. WDX experiments clearly reveals that the high-Tc phase contains a small amount of Ba as a solid solution.

Original languageEnglish
Pages (from-to)275-278
Number of pages4
JournalJournal of the Japan Society of Powder and Powder Metallurgy
Volume38
Issue number2
DOIs
Publication statusPublished - 1991

ASJC Scopus subject areas

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

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    Takada, J., Oda, K., Egi, T., Fujiwara, M., Kitaguchi, H., Miura, Y., Mazaki, H., Tomii, Y., Ikeda, Y., Hiroi, Z., & Takano, M. (1991). Effect of Ba addition to the High-Tc Phase in the Bi-Pb-Sr-Ca-Cu-O System (II). Journal of the Japan Society of Powder and Powder Metallurgy, 38(2), 275-278. https://doi.org/10.2497/jjspm.38.275