Analytical electron microscopy of high-Tc superconductors in the (Bi, Pb)-Ca-Sr-Cu-O system

Daisuke Shindo, Hiroshi Sato, Gerald L. Liedl, Kenji Hiraga, Norio Kobayashi, Makoto Hirabayashi, Yoshio Muto

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4 Citations (Scopus)

Abstract

Superconductors in the Bi-Ca-Sr-Cu-O system containing a small amount of Pb were investigated by analytical electron microscopy as well as high-resolution electron microscopy. X-ray spectroscopy analysis showed that most of grains in the samples contain approximately the same amount of Pb, and the compositions of the grains with the low-Tc (60 K) phase correspond to (Bi, Pb)1.1(Ca, Sr)1.4Cu1.0Ox. The compositions of the samples containing high-Tc phase differ from grain to grain but indicate higher Cu atomic fraction than that of the low-Tc phase. High resolution electron microscope images directly reveal the modulated structure along the [010] direction with an incommensurate period which is the same as that observed in Bi-Ca-Sr-Cu-O. Electron energy loss spectra were also investigated by means of parallel detection system. The position and shape of the strong peak above the threshold at the oxygen K-edge were discussed relative to data for YBa2Cu3Ox.

Original languageEnglish
Pages (from-to)L415-L418
JournalJapanese journal of applied physics
Volume28
Issue number3 A
DOIs
Publication statusPublished - 1989 Mar

Keywords

  • Analytical electron microscopy
  • Electron energy loss spectroscopy
  • High-T
  • High-T superconductor
  • Low-T phase
  • Parallel detection system Bi-Pb-Ca-Sr-Cu-O

ASJC Scopus subject areas

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

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    Shindo, D., Sato, H., Liedl, G. L., Hiraga, K., Kobayashi, N., Hirabayashi, M., & Muto, Y. (1989). Analytical electron microscopy of high-Tc superconductors in the (Bi, Pb)-Ca-Sr-Cu-O system. Japanese journal of applied physics, 28(3 A), L415-L418. https://doi.org/10.1143/JJAP.28.L415