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Publication Citation: Direct Observation of Spin Configurations and Classification of Switching Processes in Mesoscopic Ferromagnetic Rings

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Author(s): M Klaui; C Vaz; J Bland; T Monchesky; John Unguris; G R. SPELEEM; L J. Heyderman; Z Cui;
Title: Direct Observation of Spin Configurations and Classification of Switching Processes in Mesoscopic Ferromagnetic Rings
Published: October 01, 2003
Abstract: Using non-intrusive imaging techniques we have directly observed the nanoscopic details of the magnetization configurations of epitaxial and polycrystalline mesoscopic ring structures with <15 nm resolution. We have found head to head domain walls with different spin structures depending on ring width. Further, we can classify the geometry dependent switching processes according to the number of transitions (single, double, triple) that a ring undergoes in a hysteresis cycle. In the case of triple switching we find a novel state with a complete vortex core present in the ring.
Citation: Physical Review B (Condensed Matter and Materials Physics)
Volume: 68
Issue: 13
Keywords: micromagnetic;nanoscale;rings;SEMPA;SPELEEM;switching;vortex
Research Areas: Nanomagnetics
PDF version: PDF Document Click here to retrieve PDF version of paper (130KB)