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Direct observation of point defects in Nb12O29 by high-resolution electron microscopy (1973)

Iijima, S. ; Kimura, S. ; Goto, M.

[S.l.] : International Union of Crystallography (IUCr)

Acta crystallographica 29 (1973), S. 632-636

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ISSN: 1600-5724

Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001

Topics: Chemistry and Pharmacology , Geosciences , Physics

Notes: Point defects have been observed directly in non-stoichiometric niobium oxides, Nb12O29, by high- resolution electron microscopy at a resolution of 3-4 Å. A proposed model for the point defect is a complex composed of two interstitial metal atoms and two interstitial oxygen atoms. Observations have been made on the annealing out of these defects under electron irradiation. Evidence on the density of these defects offers a semi-quantitative explanation of how the non-stoichiometric oxygen excess in these oxides is accommodated in the matrix structure.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1107/S0567739473001610

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