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Non equilibrium magnetization in antiferromagnetically coupled [Fe/Cr]10multilayers on large time scales

Authors
Journal
Journal of Magnetism and Magnetic Materials
0304-8853
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/j.jmmm.2003.12.1244
Keywords
  • Fe/Cr Multilayers
  • Magnetic After-Effect
  • Magnetic Noise
Disciplines
  • Physics

Abstract

Abstract Ultra slow nonequilibrium magnetization dynamics in epitaxial antiferromagnetically coupled [ Fe/Cr(0 0 1)] 10 has been studied at temperatures down to 50 mK by using giant magnetoresistance. Measurements, carried out in magnetic fields up to 90 kG show, depending on the magnetic field, temperature and magnetic history, a coupled domain rotation or slow logarithmic relaxation followed by avalanches or transition to chaotic noise regime.

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