Enhanced hydrogen solubility in niobium films
- 15 May 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 31 (10) , 6804-6806
- https://doi.org/10.1103/physrevb.31.6804
Abstract
The solubility of hydrogen in niobium films (100–3000 Å) and multilayers of Nb and Pd (20–130 Å) has been studied as a function of film thickness by resistivity and x-ray measurements. The H concentration in solid solution was observed to be greatly enhanced, by a factor of more than 40, as the Nb films were made thinner. This suggests a dependence of the phase diagram on film thickness, with a depression of the Nb-H critical temperature for films thinner than 1200 Å, but approaching the bulk values for thick films (t>2200 Å). Similar results were observed in Nb-Pd multilayers.Keywords
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