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Nanotechnology. 2009 Jan 28;20(4):045703. doi: 10.1088/0957-4484/20/4/045703. Epub 2008 Dec 19.

Structural and magnetic properties of an InGaAs/Fe3Si superlattice in cylindrical geometry.

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Institute for Integrative Nanosciences, IFW Dresden, Dresden, Germany.


The structure and magnetic properties of an InGaAs/Fe(3)Si superlattice in a cylindrical geometry are investigated by electron microscopy techniques, x-ray diffraction and magnetometry. To form a radial superlattice, a pseudomorphic InGaAs/Fe(3)Si 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.

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