Abstract
Despite being one of the oldest known magnetic materials, and the classic mixed valencecompound, thought to be charge ordered, the structure of magnetite below the Verweytransition is complex and the presence and role of charge order is still being debated.Here, we present resonant x-ray diffraction data at the iron K-edge on forbidden(0, 0, 2n+1)C and superlattice reflections. Full linear polarization analysis of the incident and scattered light wasconducted in order to explore the origins of the reflections. Through simulation of theresonant spectra we have confirmed that a degree of charge ordering takes place, while theanisotropic tensor of susceptibility scattering is responsible for the superlattice reflectionsbelow the Verwey transition. We also report the surprising result of the conversion of asignificant proportion of the scattered light from linear to nonlinear polarization.
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