• DocumentCode
    1117529
  • Title

    SQUID magnetometer noise measurements on YBa2Cu3 O7 thin films and input coils

  • Author

    DiIorio, M.S. ; Yang, K-Y ; Zhang, J. ; Yoshizumi, S. ; Maung, M.

  • Author_Institution
    Biomagnetic Technol. Inc., San Diego, CA, USA
  • Volume
    27
  • Issue
    2
  • fYear
    1991
  • fDate
    3/1/1991 12:00:00 AM
  • Firstpage
    2573
  • Lastpage
    2577
  • Abstract
    A SQUID magnetometer system incorporating a NB-based conventional SQUID operating at 4.8 K was used to measure the magnetic field noise from high-Tc input coils and unpatterned films at 77 K. The system allows for the rapid measurement of relatively large regions of high-Tc material. The results on numerous coils and films show the noise decreasing as a function of increasing film critical current density at 77 K. High-Tc films with Jc(77 K)=3×106 A/cm2 appear suitable for use as input coils in SQUID magnetometer applications requiring low noise at frequencies down to 1 Hz
  • Keywords
    SQUIDs; barium compounds; coils; high-temperature superconductors; magnetometers; yttrium compounds; 4.8 K; 77 K; SQUID magnetometer system; film critical current density; high-Tc input coils; high-temperature superconductors; input coils; magnetic field noise; unpatterned films; Coils; Current measurement; Density measurement; Magnetic films; Magnetic materials; Noise generators; Noise measurement; SQUID magnetometers; Superconducting device noise; Transistors;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/20.133741
  • Filename
    133741
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1117529