Structural and magnetic properties of an InGaAs/Fe₃Si superlattice in cylindrical geometry
Deneke, Ch. · Schumann, J. · Engelhard, R. · Thomas, J. · Müller, C. · Khatri, M. S. · Malachias, A. · Weisser, M. · Metzger, T. H. · Schmidt, O. G.
Original · EN
The structure and the magnetic properties of an InGaAs/Fe3Si superlattice in a cylindrical geometry are investigated by electron microscopy techniques, x-ray diffraction and magnetometry. To form a radial superlattice, a pseudomorphic InGaAs/Fe3As bilayer has been released from its substrate self-forming into a rolled-up microtube. Oxide-free interfaces as well as areas of crystalline bonding are observed and an overall lattice mismatch between succeeding layers is determined. The cylindrical symmetry of the final radial superlattice shows a significant effect on the magnetization behavior of the rolled-up layers.
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