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

Published

October 1, 2003

Author(s)

M Klaui, C Vaz, J Bland, T Monchesky, John Unguris, G R. SPELEEM, L J. Heyderman, Z Cui

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

Pub Type

Journals

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Keywords

micromagnetic, nanoscale, rings, SEMPA, SPELEEM, switching, vortex

Citation

Klaui, M. , Vaz, C. , Bland, J. , Monchesky, T. , Unguris, J. , SPELEEM, G. , Heyderman, L. and Cui, Z. (2003), Direct Observation of Spin Configurations and Classification of Switching Processes in Mesoscopic Ferromagnetic Rings, Physical Review B (Condensed Matter and Materials Physics), [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=620555 (Accessed October 21, 2025)