Published online by Cambridge University Press: 25 February 2011
FeIr superlattices with short periodicities are realised by Molecular Beam Epitaxy. Ir on (1120) sapphire and Fe on (111) Ir growths are studied in situ by electron diffraction. Like FeRu superlattices, a new Fe state is stabilized with in-plane interatomic distances expanded. FeIr superlattices are analysed by X-Ray θ-2θ diffraction. It is shown that this technique allows precise calibration of Fe and Ir thicknesses and a direct determination of distances between Fe (and Ir) planes in the axis of growth. Diffraction study of FeIr superlattices reduced in powder shows that the stacking sequence in the multilayer is ABC.
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