• Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      CaBaLaCu3O7−δ; non-stoichiometry; cerium-doping tetragonal superconducting phase

    • Abstract


      We have synthesized CaBaLaCu3O7−δ and related compounds Ca0.9BaLaCu3O7−δ, Ca11 BaLaCu3O7−δ and Ca0.9Ce0.1 BaLaCu3O7−δ in order to investigate the effect of doping and non-stoichiometry at Ca-sites on the superconducting behaviour of tetragonal superconductor CaBaLaCu3O7−δ. The superconducting transition temperature (Tc) of Ca0.9 BaLaCu3O7−δ is the same as that of pure CaBaLaCu3O7−δ(67 ± 1 K). Calcium excess compound Ca1.1 BaLaCu3O7−δ showed a drop inTc to 72 K while the cerium-substituted compound Ca0.9 Ce0.1 BaLaCu3 O7−δ showed a drop inTc to 43 K. The results are explained on the basis of difference in valency between the host and the dopant ion.

    • Author Affiliations


      I K Gopalakrishnan1 R Alfred Gunasekaran1 J V Yakhmi1 R M Iyer1

      1. Chemical Group, Bhabha Atomic Research Centre, Trombay, Bombay - 400 085, India
    • Dates

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.