Advertisement

Structure-Property Relations in High-Temperature Oxide Superconductors: Nature of Oxygen and Copper

  • C. N. R. Rao
Conference paper

Abstract

Important structural aspects of the following families of perovskite-related superconductors are presented: La2-xSrx(Bax)Cu04, LnBa2Cu307, AmCan-xBxCun-102n+4 (A=T1, m=1,2; A=Bi, m=2; B=Ba,Sr). The nature of copper and oxygen in these oxide superconductors is discussed and it will be shown that oxygen holes (01- or 0 2 2- ) and Cu1+ ions play a crucial role in the superconductivity of the cuprates. Oxygen holes are likely to be present in many other oxides purported to contain metal ions such as Cu, Ni and Bi in high oxidation states; this seems to be the case with copper-free bismuth oxide superconductors as well.

Keywords

CUPRATE Superconductor Oxide Superconductor Structural Chemistry Unit Oxygen Hole Defect Perovskite 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    C.N.R. Rao, J. Solid State Chem., 74, 147 (1988)ADSCrossRefGoogle Scholar
  2. 2.
    C.N.R. Rao, (ed), The Chemistry of Oxide Superconductors, (Blackwell, Oxford, 1988).Google Scholar
  3. 3.
    C.N.R. Rao (ed), Progress in High-Temperature Superconductivity, Vol. VII, (World Scientific, Singapore, 1988).Google Scholar
  4. 4.
    R.J. Cava et al, Nature, 332, 814 (1988).ADSCrossRefGoogle Scholar
  5. 5.
    C.N.R. Rao and B. Raveau, to be published.Google Scholar
  6. 6.
    C.N.R. Rao et al, Pramana-J. Phys. 30, 495 (1988)ADSCrossRefGoogle Scholar
  7. 7.
    J.A. Yarmoff et al, Phys. Rev. B36, 3967 (1987).ADSGoogle Scholar
  8. 8.
    D.D. Sarma and C.N.R. Rao, Solid State Commun., 65, 47 (1988).ADSCrossRefGoogle Scholar
  9. 9.
    B.K. Chakraverty, D.D. Sarma and C.N.R. Rao, to be published.Google Scholar
  10. 10.
    A. Manthiram, X.X. Tang and J.B. Goodenough, Phys. Rev. B37, 3734 (1988).ADSGoogle Scholar
  11. 11.
    Y. Tokura, J.B. Torrance, T.C. Huang and A.I. Nazzal, to be published.Google Scholar

Copyright information

© Springer Japan 1989

Authors and Affiliations

  • C. N. R. Rao
    • 1
  1. 1.Solid State and Structural Chemistry UnitIndian Institute of ScienceBangaloreIndia

Personalised recommendations