Magnetic bistability of Co nanodots

Size-dependent magnetic single-domain versus vortex state stability of Co/Ru(0001) nanodots is explored with spin-polarized low-energy electron microscopy, analytical modeling, and micromagnetic simulations. We show that both single-domain and vortex states can be stabilized in a broad region near t...

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Bibliographic Details
Published in:	Physical review letters Vol. 94; no. 15; pp. 157202.1 - 157202.4
Main Authors:	DING, H. F, SCHMID, A. K, DONGQI LI, GUSLIENKO, K. Yu, BADER, S. D
Format:	Journal Article
Language:	English
Published:	Ridge, NY American Physical Society 22-04-2005
Subjects:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Magnetic properties and materials Magnetic properties of nanostructures Physics Thin films Low energy electron microscopy Micromagnetism Domain structure Magnetic domains Analytical method Magnetic-phase diagrams Nanostructures Cobalt Island structure Bistability
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Summary:	Size-dependent magnetic single-domain versus vortex state stability of Co/Ru(0001) nanodots is explored with spin-polarized low-energy electron microscopy, analytical modeling, and micromagnetic simulations. We show that both single-domain and vortex states can be stabilized in a broad region near the phase boundary. The calculated width of the bistability region and temperature dependent heights of the energy barriers between both states agree well with our experimental findings.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.94.157202