SUPERPARAMAGNETIC IRON OXIDE AND SILICA NANOPARTICLES OF HIGH MAGNETIC SATURATION AND A MAGNETIC CORE CONTAINING THE NANOPARTICLES

摘要

Thermally annealed superparamagnetic core shell nanoparticles of an iron oxide core and a silicon dioxide shell having high magnetic saturation are provided. A magnetic core of high magnetic moment obtained by compression sintering the thermally annealed superparamagnetic core shell nanoparticles is also provided. The magnetic core has little core loss due to hysteresis or eddy current flow.