Anthony, L. and Okamoto, J. K. and Fultz, B. (1993) Vibrational entropy of ordered and disordered Ni3Al. Physical Review Letters, 70 (8). pp. 1128-1130. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:ANTprl93
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We have measured the difference in vibrational entropy of Ni3Al in two states of chemical order: as a disordered fcc solid solution, and as the equilibrium L12 ordered structure. Data were obtained from three independent methods: low-temperature calorimetry, temperature-dependent x-ray diffractometry, and temperature-dependent extended electron energy loss fine structure spectrometry. We estimate that at high temperatures, the vibrational entropy of chemically disordered Ni3Al is 0.3kB/atom greater than for ordered Ni3Al.
|Additional Information:||©1993 The American Physical Society Received 3 December 1992 This work was supported by the U.S. Department of Eenrgy under Contract No. DE-FG03-86ER45270.|
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|Deposited On:||20 Feb 2006|
|Last Modified:||18 Sep 2014 18:11|
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