Magnetic bistability of Co nanodots

2020-03-21 22:14:43

magnetic energy electron dependent bistability

责任者: Ding, H.F.;Schmid, A.K.;Dongqi Li;Guslienko, K.Yu.;Bader, S.D. 单位: Mater. Sci. Div., Argonne Nat. Lab., IL, USA 来源出处: Physical Review Letters(Phys. Rev. Lett. (USA)),2005/04/22,94(15):157202-1 摘要: 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 关键词: cobalt;electron microscopy;electron spin polarisation;magnetic domains;magnetic epitaxial layers;magnetic structure;nanostructured materials;magnetic bistability;Co nanodots;size-dependent magnetic single-domain;vortex state stability;spin-polarized low-energy electron microscopy;analytical modeling;micromagnetic simulations;phase boundary;bistability region;temperature dependent heights;energy barriers;Co-Ru