Surface structures on sputtered/annealed WC(0001)

We use scanning tunnelling microscopy, Auger electron spectroscopy and low energy electron diffraction to study different tungsten and carbon terminated surface reconstructions on the sputtered /annealed WC(0001) surface. The tungsten terminated surface encompasses a (root 7 x root 7)R19 deg W-trime...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2000-02, Vol.12 (6), p.773-782
Main Authors: Göthelid, M, Janin, E
Format: Article
Language:English
Subjects:
adsorption
carbides
Condensed matter: structure, mechanical and thermal properties
electronic-structure
Exact sciences and technology
ion-scattering spectroscopy
nitrides
Physics
recombination
resolution core-level
scanning tunneling microscopy
Solid surfaces and solid-solid interfaces
stm
Surface structure and topography
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
tic surface
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Summary:We use scanning tunnelling microscopy, Auger electron spectroscopy and low energy electron diffraction to study different tungsten and carbon terminated surface reconstructions on the sputtered /annealed WC(0001) surface. The tungsten terminated surface encompasses a (root 7 x root 7)R19 deg W-trimer structure, a (root 3 x root 7) reconstruction representing a transition structure from the (root 7 x root 7)R 19 deg reconstruction to a (6 x 1) phase which consists of a quadratic W overlayer on the first close-packed carbidic carbon layer. The carbon terminated WC(0001) surface consists of a single graphitic carbon layer on top of the (6 x 1) structure.
ISSN:0953-8984
1361-648X
1361-648X
DOI:10.1088/0953-8984/12/6/302