Abstract
Nickel and copper films annealed at different temperatures were investigated at 77 K in order to determine the changes in resistivity on CO adsorption. On evaluating the results with the help of the Fuchs-Sondheimer size effect theory negative p values resulted, especially for unannealed films. This indicates that for rough surfaces, because of the larger available “true” surface area, the maximum change in resistivity is much more than it would be if the surface were plane.
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