Answers are grounded in this paper and cite their sources.
Ferromagnetic resonance (FMR) in particulate media for perpendicular recording has been studied by considering the shape anisotropy of the platelets and the volumetric packing factor. By the obtained FMR equation, the aspect ratio of 3.5 was derived from the angular dependence of the resonance fields in 34 GHz FMR measurements. The ratio is consistent with the value obtained by transmission electron microscopy.
No takes yet. Share an insight, caveat, or question.
Kohmoto et al. (1992) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: