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      https://www.ias.ac.in/article/fulltext/pram/063/02/0233-0237

    • Keywords

       

      Superconductivity; solid-state reaction method; HgO addition; neutron diffraction

    • Abstract

       

      The HgO-added YBa2Cu3O7−δ (YBCO) superconductor has been studied for its structural and superconducting properties. Polycrystalline YBCO samples were synthesized through solid-state reaction method by adding HgO in different concentrations without using oxygen annealing. All the samples showed a sharp superconducting transition temperature around 90 K. The X-ray diffraction patterns of all the samples revealed monophasic Y-123 nature. The structural studies were carried out by neutron scattering and Rietveld analysis. The neutron scattering revealed that Hg is not incorporated in the Y-123 system and has shown optimum oxygen concentration. The significant role played by the HgO is to provide oxygen ambient through its decomposition, thus changing the oxygen balance in favour of high Cu-valence state.

    • Author Affiliations

       

      Manglesh Dixit1 Shovit Bhattacharya1 Rajneesh Mohan1 Kiran Singh1 P S R Krishna1 2 Vilas Shelke1 N K Gaur1 R K Singh1 3

      1. Department of Physics, Barkatullah University, Bhopal - 462 026, India
      2. Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai - 400 085, India
      3. M.P. Bhoj Open University, Bhopal - 462 016, India
    • Dates

       
  • Pramana – Journal of Physics | News

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