• Critical current studies on metal clad R1Ba2Cu3O7−x wires

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/014/04/1101-1108

    • Keywords

       

      Critical current; metal clad wires; powder-in-tube method; cold rolling

    • Abstract

       

      Silver clad wires of R1Ba2Cu3O7−x (R=Y, Gd, Sm, Dy and Ho) have been fabricated following the powder-in-tube method and cold-rolling. The critical current densityJc at 77 K and zero magnetic field is restricted to 66 A.cm−2. In a separate experiment we have studied the effect of silver sheath thickness onJc of the Y1Ba2Cu3O7−x wires. Interestingly,Jc is higher for larger sheath thickness indicating that large sheath thickness prevents oxygen loss during sintering. Uniaxial pressing of the wires into flat tapes results in an increase of theJc. MaximumJx is, however, limited to 169 A.cm−2. No grain alignment is found in the core material of our wires which is essential for highJc. Several options are being tried.

    • Author Affiliations

       

      S R Shukla1 Y S Reddy1 R G Sharma1

      1. National Physical Laboratory, New Delhi - 110 012, India
    • Dates

       
  • Bulletin of Materials Science | News

    • 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.