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CONDENSED MATTER

Observation of structural vacancies

A. A. Valeeva^a, G. Tang^b, A. I. Gusev^a, A. A. Rempel<sup>a

a</sup> Institute of Solid State Chemistry, Urals Branch of the Russian Academy of Sciences, Ekaterinburg
^b Institut für Theoretische und Angewandte Physik, Universität Stuttgart

Abstract: A method using the atom-vacancy ordering phenomenon for the visualization of structural vacancies in crystals was suggested and implemented. The ordered nonstoichiometric titanium monoxide Ti$_5$O$_5$ was taken as the object of investigation, because the structural vacancies in this compound can be observed due to the formation of continuous vacancy channels in certain crystallographic directions. The structural vacancies in the specially oriented sample of ordered titanium monoxide were directly observed by high-resolution transmission electron microscopy with a magnification of $4\times 10^6$.

PACS: 61.16.Bg, 61.50.Ks, 61.66.Fn, 61.72.Ji

Received: 28.11.2002

 English version: Journal of Experimental and Theoretical Physics Letters, 2003, 77:1, 25–29

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