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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Published inPhysical review letters Vol. 94; no. 15; p. 157202
Main Authors Ding, H F, Schmid, A K, Li, Dongqi, Guslienko, K Yu, Bader, S D
Format Journal Article
LanguageEnglish
Published United States 22.04.2005
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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.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.94.157202