High-Tcphase promoted and stabilized in the Bi, Pb-Sr-Ca-Cu-O system

Mikio Takano, Jun Takada, Kiichi Oda, Hitoshi Kitaguchi, Yoshinari Miura, Yasunori Ikeda, Yoichi Tomii, Hiromasa Mazaki

Research output: Contribution to journalArticle

709 Citations (Scopus)

Abstract

Partial substitution of Pb for Bi in the Bi-Sr-Ca-Cu-O system has been found to sharply increase the volume fraction of the high-Tcphase when both the starting material (coprecipitated oxalate being used in the present study) and the heating process are appropriate. The sharp powder X-ray diffraction pattern obtained from well-grown particles, 5∼10 µm wide and 0.5 µm thick typically, was assigned to an orthorhombic cell with a=0.537 nm, b=2.682 nm, and c=3.726 nm. The electrical resistance dropped to zero at 107 K within the experimental limit of 10-6Ω. A large diamagnetic response in the ac susceptibility due to the Meissner effect was seen below 120 K. The dominance of the high-Tcphase over the low-Tcphase was roughly estimated at 9/1 in volume.

Original languageEnglish
Pages (from-to)L1041-L1043
JournalJapanese Journal of Applied Physics
Volume27
Issue number6A
DOIs
Publication statusPublished - Jun 1988

Keywords

  • Ac susceptibility
  • Bi
  • Coprecipitated oxalate
  • High-Tsuperconductor
  • Pb-Sr-Ca-Cu-O system

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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    Takano, M., Takada, J., Oda, K., Kitaguchi, H., Miura, Y., Ikeda, Y., Tomii, Y., & Mazaki, H. (1988). High-Tcphase promoted and stabilized in the Bi, Pb-Sr-Ca-Cu-O system. Japanese Journal of Applied Physics, 27(6A), L1041-L1043. https://doi.org/10.1143/JJAP.27.L1041