Superposition twinning supported by texture in ZnO nanospikes

Viktor Hrkac, Lorenz Kienle*, Sören Kaps, Andriy Lotnyk, Yogendra Kumar Mishra, Ulrich Schürmann, Viola Duppel, Bettina Valeska Lotsch, Rainer Adelung

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Abstrakt

The morphology and real structure of wurtzite-type ZnO nanospikes grown by the recently introduced flame transport synthesis have been examined by means of advanced transmission electron microscopy (TEM). The rapid synthesis produces nanospikes showing a well defined texture which restricts TEM experiments to a preferred viewing direction of [21̄1̄3]. Forced by the specific morphology, all of the observed nanospikes show a complicated superposition of twinned domains as an intrinsic real structural feature. The high-resolution contrasts are characterized by lamellar fringes parallel to the (11̄01̄) planes, and the quasi-kinematic diffraction patterns contain satellite peaks based on multiple scattering. All these phenomena can be interpreted by comparison of experimental and simulated data relying on a supercell approach.

OriginalsprogEngelsk
TidsskriftJournal of Applied Crystallography
Vol/bind46
Udgave nummer2
Sider (fra-til)396-403
ISSN0021-8898
DOI
StatusUdgivet - 1. apr. 2013
Udgivet eksterntJa

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