Ontology highlight
ABSTRACT:
SUBMITTER: Kim SK
PROVIDER: S-EPMC4468820 | biostudies-other | 2015
REPOSITORIES: biostudies-other
Scientific reports 20150616
We found resonantly excited precession motions of a three-dimensional vortex core in soft magnetic nanospheres and controllable precession frequency with the sphere diameter 2R, as studied by micromagnetic numerical and analytical calculations. The precession angular frequency for an applied static field HDC is given as ωMV = γeffHDC, where γeff = γ〈mΓ〉 is the effective gyromagnetic ratio in collective vortex dynamics, with the gyromagnetic ratio γ and the average magnetization component 〈mΓ〉 of ...[more]