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    • Keywords


      High temperature superconductors; resistivity; critical exponents; paracoherence; heavy ion irradiation

    • Abstract


      Critical exponent of the electrical conductivity in the paracoherence region (γ) of the high temperature superconductor YBa2Cu3O7−x (YBCO) has been estimated for high quality thin film on ZrO2 substrate prepared by high pressure oxygen sputtering. High energy ion irradiation was carried out using 100 MeV16O7+ ions at liquid nitrogen temperature to see the effects of disorder on the value of the exponent. The critical exponent (γ) changes from a value of about 2 to 1·62 upon irradiation. Studies were also carried out on this film to see the effect of ageing and annealing.

    • Author Affiliations


      Manmeet K Marhas1 K Balakrishnan1 V Ganesan1 R Srinivasan1 D Kanjilal1 2 G K Mehta1 2 G K Muralidhar1 3 G Mohan Rao1 3 Senthil Nathan1 3 S Mohan1 3

      1. Inter University Consortium for DAE Facilities, University Campus, Khandwa Road, Indore - 452 001, India
      2. Nuclear Science Centre, Post Box 10502, Aruna Asaf Ali Marg, New Delhi - 110 067, India
      3. Instrumentation and Services Unit, Indian Institute of Science, Bangalore - 560 012, India
    • Dates

  • Bulletin of Materials Science | News

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