| Numéro |
J. Phys. Colloques
Volume 47, Numéro C7, Novembre 1986
33rd International Field Emission Symposium / 33ème Symposium International d'Emission de Champ
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| Page(s) | C7-117 - C7-119 | |
| DOI | https://doi.org/10.1051/jphyscol:1986721 | |
33rd International Field Emission Symposium / 33ème Symposium International d'Emission de Champ
J. Phys. Colloques 47 (1986) C7-117-C7-119
DOI: 10.1051/jphyscol:1986721
Department of Chemistry and Laboratory for Surface Studies, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, U.S.A.
J. Phys. Colloques 47 (1986) C7-117-C7-119
DOI: 10.1051/jphyscol:1986721
CARBON ON PLATINUM : INVESTIGATIONS BY FIELD EMISSION MICROSCOPY
R. VANSELOW et M. MUNDSCHAUDepartment of Chemistry and Laboratory for Surface Studies, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, U.S.A.
Abstract
Investigations by FEM, UHV-SEM, and high resolution scanning AES indicate the formation of two types of graphite islands on Pt. One forms at low temperatures (~ 870 K to ~ 1150 K) in the high Miller index areas at the exit point of dislocations, the other grows face specifically above 1150 K in the area of {110}. The growth rate in the vicinal area of {110} is determined by the misfit parallel to the respective step edges. The alignment of graphite {0001} on Pt{110} is graphite <11[MATH]0> || Pt<110>, which is in agreement with the calculated orientation of smallest epitaxial misfit.