Studying the Ferromagnetic Resonance Heating of an Isotropic Superparamagnet by the Example of Biogenic Ferrihydrite Nanoparticles
摘要
Abstract
Ferrihydrite nanoparticles are synthesized and characterized. The dependences of heating of powders are studied upon pumping by a high-frequency electromagnetic field on a dc magnetic field. It is shown that the experimental dependence of the temperature of particles on a dc magnetic field is consistent with the theory of ferromagnetic resonance for an isotropic superparamagnet.