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024 7 _ |a 0957-4484
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024 7 _ |a 10.1088/0957-4484/22/14/145603
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037 _ _ |a PHPPUBDB-15659
041 _ _ |a eng
082 _ _ |a 530
100 1 _ |a Mandl, B.
110 1 _ |a DESY
|b Experiments with synchrotron radiation
245 _ _ |a Crystal structure control in Au-free self-seeded InSb wire growth
260 _ _ |a Bristol
|c 2011
|b IOP Publ.
300 _ _ |a 145603
336 7 _ |a Journal Article
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440 _ 0 |a Nanotechnology
|0 PERI:(DE-600)1362365-5
|v 22
|y 14
|x 0957-4484
500 _ _ |3 Converted on 2013-05-30 14:23
500 _ _ |3 Converted on 2013-06-21 19:21
520 _ _ |a In this work we demonstrate experimentally the dependence of InSb crystal structure on the ratio of Sb to In atoms at the growth front. Epitaxial InSb wires are grown by a self-seeded particle assisted growth technique on several different III-V substrates. Detailed investigations of growth parameters and post-growth energy dispersive x-ray spectroscopy indicate that the seed particles initially consist of In and incorporate up to 20 at.% Sb during growth. By applying this technique we demonstrate the formation of zinc-blende, 4H and wurtzite structure in the InSb wires (identified by transmission electron microscopy and synchrotron x-ray diffraction), and correlate this sequential change in crystal structure to the increasing Sb/In ratio at the particle-wire interface. The low ionicity of InSb and the large diameter of the wire structures studied in this work are entirely outside the parameters for which polytype formation is predicted by current models of particle seeded wire growth, suggesting that the V/III ratio at the interface determines crystal structure in a manner well beyond current understanding. These results therefore provide important insight into the relationship between the particle composition and the crystal structure, and demonstrate the potential to selectively tune the crystal structure in other III-V compound materials as well.
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700 1 _ |a Dick, K. A.
700 1 _ |a Kriegner, D.
700 1 _ |a Keplinger, M.
700 1 _ |a Bauer, G.
700 1 _ |a Stangl, J.
700 1 _ |a Deppert, K.
773 _ _ |a 10.1088/0957-4484/22/14/145603
|g Vol. 22, p. 145603
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|t Nanotechnology
|v 22
|y 2011
|x 0957-4484
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914 1 _ |a (c) Institute of Physics.
|y 2011
915 _ _ |a JCR/ISI refereed
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