Highly efficient heat-dissipation power driven by ferromagnetic resonance in MFe₂O₄ (M = Fe, Mn, Ni) ferrite nanoparticles.

ABSTRACT: We experimentally demonstrated that heat-dissipation power driven by ferromagnetic resonance (FMR) in superparamagnetic nanoparticles of ferrimagnetic MFe₂O₄ (M = Fe, Mn, Ni) gives rise to highly localized incrementation of targeted temperatures. The power generated thereby is extremely high: two orders of magnitude higher than that of the conventional Néel-Brownian model. From micromagnetic simulation and analytical derivation, we found robust correlations between the temperature increment and the intrinsic material parameters of the damping constant as well as the saturation magnetizations of the nanoparticles' constituent materials. Furthermore, the magnetization-dissipation-driven temperature increments were reliably manipulated by extremely low strengths of appli

SUBMITTER: Lee JH 

PROVIDER: S-EPMC8960867 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature