2008
DOI: 10.1063/1.2999347
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Asymmetric magnetization reversal in a single exchange-biased micro bar

Abstract: The asymmetric magnetization reversal is studied in a single exchange-biased microbar of 1.5 µm × 13 µm with anisotropic magnetoresistance and magnetic force microscopy. The particle has a moment of less than 10 −9 emu and is not accessible with standard magnetometry. The asymmetric hysteresis loop of CoFe/CrMnPt shows a repeatable rotation process, followed by an irreversible nucleation process that is marked by jumps in the magnetoresistance. The induced unidirectional anisotropy enhances the rotation proces… Show more

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