title: The oxidation of diamond: the geometry and stretching frequency of carbonyl on the (100) surface.
abstract: Microwave plasma deposited (100) diamond films have been thermally oxidized in dry O2 between 500 and 723 degrees C. The roughness of a single crystalline grain following oxidation is consistent with a layer-by-layer mechanism for the removal of carbon monoxide. The resulting surface exhibits infrared absorption bands at 1731 and 905 cm-1, attributed to the stretching and bending modes of a surface bonded carbonyl group. The former is within 1 cm-1 of the structurally analogous molecule 2-adamantanone. These data are consistent with the carbonyl groups being present on diamond (100) terraces.
authors.affiliation: School of Engineering and Physical Sciences, Heriot-Watt University, Riccarton, Edinburgh EH14 4AS, Scotland, U.K. P.John@hw.ac.uk
authors.forename: Phillip
authors.initials: P
authors.lastname: John
authors.forename: Neil
authors.initials: N
authors.lastname: Polwart
authors.forename: Clare E
authors.initials: CE
authors.lastname: Troupe
authors.forename: John I B
authors.initials: JI
authors.lastname: Wilson