• Effect of substitution at the barium site in YBa2Cu3O7-δ

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    • Keywords

       

      YBa2Cu3O7-δ; structural properties; superconducting properties

    • Abstract

       

      The oxygen content in YBa2Cu3O7-δ has been varied by substitution at Ba site with Sr or K and its influence on the structural and superconducting properties has been studied. These properties are compared with that of unsubstituted YBa2Cu3O7-δ prepared by quenching. The increase inδ value of YBa2Cu3O7-δ decreases theTc drastically, whereas in YBa2-χKχCu3O7-δ system increase in theδ value (as high as 0·92) does not affect the superconducting transition temperature, which remains above 77 K. In the YBa2-χSrχCu3O7-δ system, as Sr content increases there is marginal decrease in the oxygen content as well as in the superconducting transition temperature.

    • Author Affiliations

       

      N S Raman1 B Viswanathan1

      1. Department of Chemistry, Indian Institute of Technology, Madras - 600 036, India
    • Dates

       
  • Bulletin of Materials Science | News

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