Physics – Condensed Matter – Materials Science
Scientific paper
2006-01-18
Physics
Condensed Matter
Materials Science
42 pages including 17 figures. submitted to JAP
Scientific paper
10.1063/1.2227481
The time and field dependence of the magnetic domain structure at magnetization reversal were investigated by Kerr microscopy in interacting ferromagnetic Co/Pt multilayers with perpendicular anisotropy. Large local inhomogeneous magnetostatic fields favor mirroring domain structures and domain decoration by rings of opposite magnetization. The long range nature of these magnetostatic interactions gives rise to ultra-slow dynamics even in zero applied field, i.e. it affects the long time domain stability. Due to this additionnal interaction field, the magnetization reversal under short magnetic field pulses differs markedly from the well-known slow dynamic behavior. Namely, in high field, the magnetization of the coupled harder layer has been observed to reverse more rapidly by domain wall motion than the softer layer alone.
Baltz Vincent
Dieny Bernard
Ferre Jacques
Jamet J.-P.
Mougin A.
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