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Surface structures on sputtered/annealed WC(0001)
KTH, Superseded Departments, Materials Science and Engineering.
2000 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 12, no 6, 773-782 p.Article in journal (Refereed) Published
Abstract [en]

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 degrees W-trimer structure, a (root 3 x root 7) reconstruction representing a transition structure from the (root 7 x root 7)R19 degrees 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.

Place, publisher, year, edition, pages
2000. Vol. 12, no 6, 773-782 p.
Keyword [en]
scanning tunneling microscopy, ion-scattering spectroscopy, resolution core-level, electronic-structure, tic(111) surface, stm, recombination, adsorption, carbides, nitrides
URN: urn:nbn:se:kth:diva-19575ISI: 000085510400014OAI: diva2:338267
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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