Oxygen-Intercalation Effect upon Tetragonal-LaBa2Cu3−xOy Compound Samples

  • Ryozo Yoshizaki
  • Hideaki Sawada
  • Toshiaki Iwazumi
  • Yosuke Saito
  • Yoshihito Abe
  • Hiroshi Ikeda
  • Izumi Nakai

Abstract

In order to clarify mechanism of high-temperature superconductivity of the oxygen-deficient triperovskite YBa2Cu3Oz it will be important to investigate the relation between a crystal structure and superconducting properties. The structural analyses of the YBa2Cu3Oz compound have been studied in many works and their results are summarized by Okamura et al.1 In this compound the superconducting transition temperature (Tc) has found to be strongly dependent upon its crystal phase, orthorhombic or tetragonal, and upon oxygen deficiencies.2 In this system, however, the structural phase transition (orthorhombic-to-tetragonal transformation) has made it difficult to understand the superconducting properties as a function of the oxygen content.

Keywords

Calcination Thermogravimetric Analysis 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    F. P. Okamura, S. Sueno, I. Nakai and A. Ono: Proc. Jpn. Academy. 63, Ser. B (1987) in press.Google Scholar
  2. 2.
    H. Sawada, T. Iwazumi, Y. Saito, Y. Abe, H. Ikeda and R. Yoshizaki: to be published in Jpn. J. Appl. Phys. 26, No. 6 (1987).Google Scholar
  3. 3.
    I. Nakai, K. Imai, T. Kawashima, and R. Yoshizaki: submitted to Jpn. J. Appl. Phys.Google Scholar
  4. 4.
    F. Izumi, H. Asano, T. Ishigaki, E. Takayama-Muromachi, Y. Uchida, N. Watanabe, and T. Nishikawa: Jpn. J. Appl.Phys. 26, L649 (1987).CrossRefGoogle Scholar
  5. 5.
    M. Hikita, S. Tsurumi, K. Semba, T. Iwata, and S. Kurihara: Jpn. J. Appl. Phys. 26, L615 (1987).CrossRefGoogle Scholar
  6. 6.
    T. Iwazumi, R. Yoshizaki, M. Inoue, H. Sawada, H. Ikeda, and E. Matsuura: Jpn. J. Appl. Phys. 26, L621 (1987).CrossRefGoogle Scholar
  7. 7.
    S. Tsurumi, M. Hikita, T. Iwata, K. Semba, and S. Kurihara: Jpn. J. Appl. Phys. 26, L856 (1987).CrossRefGoogle Scholar
  8. 8.
    D. B. Mitzi, A. F. Marshall, J. Z. Sun, D. J. Webb, M. R. Beasley, T. H. Geballe, and A. Kapitulnik: to be published in Phys. Rev.Google Scholar
  9. 9.
    M. Inoue, T. Takemori, K. Ohtaka, R. Yoshizaki, and T. Sakudo: to be published in Solid State Commun.Google Scholar

Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • Ryozo Yoshizaki
    • 1
  • Hideaki Sawada
    • 1
  • Toshiaki Iwazumi
    • 2
  • Yosuke Saito
    • 2
  • Yoshihito Abe
    • 2
  • Hiroshi Ikeda
    • 3
  • Izumi Nakai
    • 4
  1. 1.Institute of Applied PhysicsUniversity of TsukubaSakura-mura, IbarakiJapan
  2. 2.Institute of PhysicsUniversity of TsukubaSakura-mura, IbarakiJapan
  3. 3.Cryogenics CenterUniversity of TsukubaSakura-mura, IbarakiJapan
  4. 4.Department of ChemistryUniversity of TsukubaSakura-mura, IbarakiJapan

Personalised recommendations