Hysteresis Loss-Induced Temperature in Ferromagnetic Nanoparticle

摘要

Hysteresis loss causes the generation of magnetostatic energy dissipated as heat. In the low applied field and magnetic nanoparticles, the mechanism of heating is not well understood and can be due to losses in hysteresis cycle. The hysteresis loss and thermal characteristics of magnetic nanoparticles are different from bulk material due to an increase in surface-to-volume ratios as well as of confinement of electrons, excitons, and photons into small volumes. This work utilizes heat conduction equation to theoretically study the temperature rise due to hyperthermia. The results are compared with available experimental data and the effects of parameters on temperature histories in magnetic nanoparticles are also discussed.