Bulletin of Materials Science

, Volume 10, Issue 3, pp 233–239

Electron microscopic investigation of high-temperature oxide superconductors

  • G N Subbanna


Electron microscopic investigations have been carried out on superconducting YBa2Cu3 O7−δ, NdBa2Cu3 O7−δ and related oxides. All these orthorhombic oxides exhibit twin domains. Based on high resolution electron microscopy, it is shown that there is no significant change in the structure across the twins. Oxides of the La2−xSrx(Bax)CuO4 system do not show twins, but exhibit other types of defects. Twins appear to be characteristic of only the orthorhombic 123 structures.


Electron microscopy twins oxide superconductors 


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Copyright information

© Indian Academy of Sciences 1988

Authors and Affiliations

  • G N Subbanna
    • 1
  1. 1.Materials Research LaboratoryIndian Institute of ScienceBangaloreIndia

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