An Analysis of Small Magnetic Nanoparticles Using EPR

Abstract

A technique based on the gigantic spin model was used to interpret the spectra. We show the thermal development of the spin system in terms of the population of excited spin states, which confirms the quantum behaviour of MNPs. Electron magnetic resonance (EMR) spectroscopy was used to analyses magnetic nanoparticles (MNPs) of spinel type iron oxide (of approximately 4 nm) calcified inside the interior cavity of a small ferritin-type protein. EMR measurements were taken in perpendicular and parallel configurations at various temperatures.