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    • Keywords

       

      YBa2Cu3O7−δ; XRD; iodometric titration; XPS; XANES

    • Abstract

       

      Results of the XRD, XPS, XANES, iodometric titration and transport studies on freshly prepared Ce, Zr and Ti substituted 1-2-3 samples are reported here. It is argued that at least 2% of Ce, Zr and Ti ions go into the 1-2-3 lattice. It is found that Zr, Ti ions exist in 4+ valence state, Ce is in predominantly 4+ (mixed valence) state and valence of Cu remains unaffected on substitution.

    • Author Affiliations

       

      P K Mehta B D Padalia1 O M Prakash2 D T Adroja P D Prabhawalkar3 N Venkataramani4 S K Malik5 A V Narlikar6

      1. Department of Physics, Indian Institute of Technology, Bombay - 400 076, India
      2. Materials Science Centre, Indian Institute of Technology, Bombay - 400 076, India
      3. Regional Sophisticated Instrumentation Centre, Indian Institute of Technology, Bombay - 400 076, India
      4. Advanced Centre for Research in Electronics, Indian Institute of Technology, Bombay - 400 076, India
      5. Tata Institute of Fundamental Research, Bombay - 400 005, India
      6. National Physical Laboratory, New Delhi - 110 012, India
    • Dates

       
  • Bulletin of Materials Science | News

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