Published online by Cambridge University Press: 25 February 2011
Diamond (100) substrates have been halogenated under ultrahigh vacuum conditions using atomic beams of chlorine and fluorine. X-ray photoelectron spectra of the resulting samples indicate that saturation levels of less than a monolayer occur for both species. The fluoride adlayer is stable up to 700 K and slowly desorbs at temperatures above this temperature. In contrast, the chlorine adlayer starts to desorb above 223 K, the lowest temperature sampled.