• DocumentCode
    952066
  • Title

    Long term stability of magnetoresistive bubble detectors

  • Author

    Gangulee, A. ; Bajorek, C.H. ; d´Heurle, F.M. ; Mayadas, A.F.

  • Author_Institution
    IEEE, tmag
  • Volume
    10
  • Issue
    3
  • fYear
    1974
  • fDate
    9/1/1974 12:00:00 AM
  • Firstpage
    848
  • Lastpage
    851
  • Abstract
    Various failure modes of Permalloy magnetoresistors are evaluated. Magnetic failure of magnetoresistors can be eliminated by passivation with evaporated SiO and sputtered Al2O3and Si3N4films. Effect of the permalloy/Au interaction at the sensor/lead metallization interface was investigated by high current and temperature stressing (5.5 × 106A/cm2and 330°C) of actual sensors, and by He-ion nuclear backscattering and x-ray diffraction analysis of Au/permalloy sheet film couples. Stripe cracking failures occur at the negative terminal. Significant interdiffusion of Au/permalloy can occur. However, the interdiffusion is not particularly deleterious to sensor performance.
  • Keywords
    Magnetic bubble detection; Magnetoresistive devices; Permalloy films/devices; Detectors; Gold; Magnetic films; Magnetic sensors; Magnetoresistance; Magnetoresistive devices; Passivation; Semiconductor films; Stability; Temperature sensors;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1974.1058410
  • Filename
    1058410
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=952066