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Coadsorption phase diagram for Kr/CCl4 on graphite

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. doi:10.1103/PhysRevB.66.165419.

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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.

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Additional Information:©2002 The American Physical Society Received 29 September 2001; revised 10 June 2002; published 25 October 2002
Issue or Number:16
Record Number:CaltechAUTHORS:WEBprb02
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6574
Deposited By: Archive Administrator
Deposited On:13 Dec 2006
Last Modified:08 Nov 2021 20:35

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