Epitaxial Electrodeposition of Fe 3 O 4 on Single‐Crystal Au(111)

Magnetite (Fe3O4) is a very promising material for giant magnetoresistance devices.Here, the electrochemical deposition of epitaxial films of Fe3O4 on a Au(111) single crystal is reported (see Figure). No thermal annealing is required to effect crystallization. It is shown that the epitaxial film has a (111) out-of-plane orientation and two types of in-plane orientation.