Site-selective holographic imaging of iron arrangements in magnetite.

ABSTRACT

Complex gamma-ray holograms were recorded by tuning to the nuclear absorption lines of 57Fe in magnetite corresponding to different hyperfine fields. The numerical reconstruction of the holograms to real space provided three-dimensional images of local iron arrangements in octahedral and tetrahedral sublattices of magnetite. This direct site-selective imaging of atomic structure was performed using a tabletop experimental setup.