Abstract
Discontinuous gold, platinum and palladium films on both glass and rocksalt substrates were prepared, and their conductance-temperature characteristics were monitored. While the properties of the gold and platinum films were similar to those found by other workers, the palladium-rocksalt films gave results which were very different. These differences were assigned to the absorption of hydrogen by the palladium islands comprising the films. The conductance-temperature characteristics for annealed films were found to exhibit a hysteresis effect on cooling and heating. An explanation of the properties of discontinuous palladium films is put forward, with both work function variations and island expansions due to hydrogen absorption being considered.
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