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Local precessional reversal of a spin-valve element

Authors
Journal
Journal of Magnetism and Magnetic Materials
0304-8853
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/j.jmmm.2003.12.1200
Keywords
  • Spin Valves
  • Magnetisation Dynamics
  • Fast Reversal Processes

Abstract

Abstract Magnetisation reversal by precession has been observed for a micron-sized (4 μm×8 μm) spin-valve element in response to 250 ps field pulses. Due to the dispersion of the magnetisation orientation at remanence, the magnetisation of only a small fraction of the sample is aligned perpendicular to the excitation field and can undergo precessional reversal. Although this leads to an overall reduced magneto-resistance ratio, two well-defined signal levels can be established.

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