Ch Deneke et al 2009 Nanotechnology 20 045703 doi:10.1088/0957-4484/20/4/045703
Ch Deneke1, J Schumann1, R Engelhard1, J Thomas2, C Müller1, M S Khatri3, A Malachias4, M Weisser5, T H Metzger4 and O G Schmidt1
Show affiliationsThe structure and 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/Fe3Si bilayer has been released from its substrate self-forming into rolled-up microtubes. 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.
75.70.Cn Magnetic properties of interfaces (multilayers, superlattices, heterostructures)
68.37.-d Microscopy of surfaces, interfaces, and thin films
75.60.Ej Magnetization curves, hysteresis, Barkhausen and related effects
Issue 4 (28 January 2009)
Received 11 September 2008, in final form 4 November 2008
Published 19 December 2008
Ch Deneke et al 2009 Nanotechnology 20 045703
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