Weber, William J. and Goodstein, David L. (2002) Coadsorption phase diagram for Kr/CCl4 on graphite. Physical Review B, 66 (16). Art. No. 165419. ISSN 0163-1829 http://resolver.caltech.edu/CaltechAUTHORS:WEBprb02
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We present the results of an extensive calorimetric study of krypton coadsorbed on graphite precoated with a saturated monolayer of carbon tetrachloride. Combining the heat capacity data with film equation of state measurements from a previous study [W. J. Weber and D. L. Goodstein, Phys. Rev. Lett. 83, 3888 (1999)] permits construction of the Kr/CCl4 coadsorption phase diagram between 77 and 130 K. Kr succeeds in displacing the CCl4 from the surface, by a continuous process which results, at lower temperatures, in a film indistinguishable from that of pure Kr adsorbed on graphite. At higher temperatures, a new first-order phase transition, unique to the coadsorption system, is observed and likely indicates a transition to a mixed Kr/CCl4 film. Finally, measurements at higher Kr coverages reveal evidence for a high temperature extension of the reentrant layering phenomena previously observed for Kr on graphite.
|Additional Information:||©2002 The American Physical Society Received 29 September 2001; revised 10 June 2002; published 25 October 2002|
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|Deposited On:||13 Dec 2006|
|Last Modified:||26 Dec 2012 09:23|
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