Picosecond time-resolved magnetization dynamics of thin-film heads

DOI PDF 被引用文献1件
  • M. R. Freeman
    Department of Physics, University of Alberta, Edmonton, Canada T6G 2J1
  • J. F. Smyth
    IBM Storage Systems Division, 5600 Cottle Road, San Jose, California 95123

書誌事項

公開日
1996-04-15
DOI
  • 10.1063/1.361896
公開者
AIP Publishing

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説明

<jats:p>The application of picosecond magneto-optic sampling techniques to studies of the magnetization dynamics of thin-film recording heads is described. Time-resolved magnetization measurements are performed using picosecond stroboscopic scanning Kerr microscopy. A Faraday probe is used to monitor the coil excitation current with the same optical setup, yielding a direct measure of the magnetic propagation delay through the head. This delay is found to have a marked spatial dependence across the face of the pole tips. As an aid to visualization of the spatial dependence, scanned images of the polar Kerr rotation at fixed time delays are acquired.</jats:p>

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