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The double modulation superstructure of the room temperature stable phase of stoichiometric Cu2Te

✍ Scribed by Vouroutzis, N. ;Frangis, N. ;Manolikas, C.

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
715 KB
Volume
202
Category
Article
ISSN
0031-8965

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✦ Synopsis

Abstract

The structure of the room temperature phase Ξ±~I~‐Cu~2~Te is studied by means of electron diffraction and high resolution electron microscopy. It is found that the structure is the result of two modulations. The first one is the periodic introduction of planar translation interfaces perpendicular to the [111]~c~ direction of the fcc basic structure. The second one is the ordering of Cu in octahedral and tetrahedral sites, in a way similar to that known for the β‐Cu~2~Se structure. The superstructure unit cell includes twelve Te layers. (Β© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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