Ferromagnetic Domain Distribution in Thin Films During Magnetization Reversal

Details Ferromagnetic Domain Distribution in Thin Films During Magnetization Reversal Ferromagnetic Domain Distribution in Thin Films During Magnetization Reversal

2001-05-02

arxiv.org/abs/cond-mat/0105040v2

Physics

Condensed Matter

Materials Science

Scientific paper

10.1103/PhysRevB.65.224417

We have shown that polarized neutron reflectometry can determine in a model-free way not only the mean magnetization of a ferromagnetic thin film at any point of a hysteresis cycle, but also the mean square dispersion of the magnetization vectors of its lateral domains. This technique is applied to elucidate the mechanism of the magnetization reversal of an exchange-biased Co/CoO bilayer. The reversal process above the blocking temperature is governed by uniaxial domain switching, while below the blocking temperature the reversal of magnetization for the trained sample takes place with substantial domain rotation.

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