Applied Physics A

, Volume 79, Issue 8, pp 1925–1930 | Cite as

Dynamics of magnetic stray fields at initial stage of magnetization reversal of micrometer-sized Co dots

  • A. Krasyuk
  • A. Oelsner
  • S.A. Nepijko
  • N.N. Sedov
  • A. Kuksov
  • C.M. Schneider
  • G. Schönhense
Article

Abstract

The dynamical evolution of magnetic stray fields has been investigated at the initial stage of magnetization reversal of a microstructured cobalt film (Co dots). Quantitative measurements of the domain magnetization and of the shift of the domain boundaries have been performed at 1 ns intervals. The measurements were performed using an emission electron microscope. The photoelectrons were excited from a sample using well-defined synchrotron-radiation pulses in single bunch operation mode (UE56/1-PGM at BESSY II, Berlin). The magnetization movement was initiated by an external magnetic field pulse, the pulse width being 8 ns. The magnetic field pulse was synchronized with the synchrotron single bunch radiation pulses. The lateral and time resolutions of the applied pulses were 50 nm and 500 ps, respectively.

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Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • A. Krasyuk
    • 1
  • A. Oelsner
    • 1
  • S.A. Nepijko
    • 1
    • 2
  • N.N. Sedov
    • 3
  • A. Kuksov
    • 4
  • C.M. Schneider
    • 4
  • G. Schönhense
    • 1
    • 5
  1. 1.Institut für PhysikJohannes Gutenberg-UniversitätMainzGermany
  2. 2.Institute of PhysicsNational Academy of Sciences of UkraineKievGermany
  3. 3.The Moscow Military InstituteMoscowGermany
  4. 4.Leibniz-Institut für Festkörper- und WerkstoffforschungDresdenGermany
  5. 5.GST mbHMainzGermany

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