Effect of Multilayered Structure on the Static and Dynamic Properties of Magnetic Nanospheres.

ABSTRACT: The development of flexible and lightweight electromagnetic interference (EMI)-shielding materials and microwave absorbers requires precise control and optimization of core-shell constituents within composite materials. Here, a theoretical model is proposed to predict the static and dynamic properties of multilayered core-shell particles comprised of exchange-coupled layers, as in the case of a spherical iron core coupled to an oxide shell across a spacer layer. The theory of exchange resonance in homogeneous spheres is shown to be a limiting special case of this more general theory. Nucleation of magnetization reversal occurs through either quasi-uniform or curling magnetization processes in core-shell particles, where a purely homogeneous magnetization configuration is forbidden by the m

SUBMITTER: McKeever C 

PROVIDER: S-EPMC9354015 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature