Low-temperature structure of magnetite studied using resonant x-ray scattering
作者： Y. Joly , J. E. Lorenzo , E. Nazarenko , J.-L. Hodeau , D. Mannix
DOI: 10.1103/PHYSREVB.78.134110
关键词: Photon energy 、 Physics 、 Charge ordering 、 Moment (physics) 、 Scattering 、 Charge (physics) 、 Symmetry (physics) 、 Plane (geometry) 、 Molecular physics 、 Phase (waves) 、 Optics
摘要: We propose a model for the Fe atomic displacements in low-temperature phase of magnetite Fe3O4 , based on analysis photon energy dependence scattered intensity selected reflections resonant x-ray scattering experiment. The symmetry displacement pattern is forced to be consistent with Cc space group, long time claimed actual phase. positions at octahedral sites and corresponding charges are accounted by fitting procedure comparing simulations experiment.We found small distortions a-b plane. An independent sensitivity charge occupancy permits refine ordering previously proposed. Finally we have computed electric moment combined 1.5 C/cm2.
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