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The crystallographic shear planes of the non-stoichiometric molybdenum oxides as revealed by RHEED: Investigation from the Mo18O52(100) surface

Authors
Journal
Surface Science
0039-6028
Publisher
Elsevier
Publication Date
Volume
164
Issue
1
Identifiers
DOI: 10.1016/0039-6028(85)90714-9

Abstract

Abstract Large Mo 18O 52 crystals are obtained by an appropriate crystallization method. The examination of their well developed surfaces by the use of reflection high energy electron diffraction (RHEED) proves that these are (100) surfaces stepped along [010] directions. It is concluded that this oxide surface conformation can be connected to the particular Mo 18O 52 structure which is built up of MoO 3 slabs of finite width mutually joined by crystallographic shear planes (CS planes). Transmission electron microscopy (TEM) analysis from Mo 18O 52 crystal flakes confirms that these are single crystals without disorder in the periodicity of the CS planes.

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