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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/014/04/1131-1134

    • Keywords

       

      Bulk rf Y-Ba-Cu-O SQUID; rf SQUID; granular weak link SQUID

    • Abstract

       

      A two-hole rf SQUID has been fabricated out of bulk YBCO by drilling two holes and careful erosion of the wall between the holes. Commercial SQUID electronics is inductively coupled to the SQUID through a copper coil glued in one of the holes. Periodic oscillations in V-B characteristic of the SQUID are observed at 77 K. The spectral density of the flux noise in the white noise region is 5·5 × 10−4Φ0 / √Hz. The flux noise is frequency-dependent below 200 Hz.

    • Author Affiliations

       

      S K Arora1 A K Gupta1 Neeraj Khare1 V S Tomar1 V N Ojha1

      1. Cryogenics Division, National Physical Laboratory, Dr K. S. Krishnan Road, New Delhi - 110 012, India
    • Dates

       

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