• DocumentCode
    1258190
  • Title

    Thermal magnetization noise in spin valves

  • Author

    Smith, Neil ; Arnett, Patrick

  • Author_Institution
    IBM Almaden Res. Center, San Jose, CA, USA
  • Volume
    38
  • Issue
    1
  • fYear
    2002
  • Firstpage
    32
  • Lastpage
    37
  • Abstract
    Thermal magnetization fluctuations (mag-noise) in giant magnetoresistive (GMR) spin valve (or any MR) heads will serve as a fundamental limit on their signal-to-noise-ratio (SNR). Measured mag-noise in several varied spin-valve read sensors is shown to be in good quantitative agreement with predictions based on the fluctuation-dissipation theorem. The dependence of mag-noise and head-SNR on sensor geometry and other device parametrics is discussed.
  • Keywords
    giant magnetoresistance; magnetic recording noise; magnetoresistive devices; spin valves; thermal noise; fluctuation-dissipation theorem; giant magnetoresistive heads; head-SNR; sensor geometry; signal-to-noise-ratio; spin valves; thermal magnetization noise; Fluctuations; Geometry; Giant magnetoresistance; Magnetic heads; Magnetic noise; Magnetic sensors; Magnetization; Signal to noise ratio; Spin valves; Thermal resistance;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.2002.988907
  • Filename
    988907
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1258190