Effect of phonon anharmonicity on the thermal and elastic properties of stabilized δ-plutonium |
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Authors: | A N Filanovich A A Povzner V Yu Bodryakov Yu Yu Tsiovkin V V Dremov |
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Affiliation: | (1) Institut Laue-Langevin, F–38042, Grenoble Cedex, France;(2) Institut Laue-Langevin, Grenoble, France |
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Abstract: | The Debye temperature, bulk modulus, density, and molar heat capacity of a Pu0.95Al0.05 alloy have been calculated as functions of the temperature using a self-consistent thermodynamic model developed according
to a quasi-classical approach that takes into account the effect of phonon anharmonicity on the acoustic and thermodynamic
properties of metals. The results of self-consistent numerical simulation of the thermal and elastic properties are compared
to the available experimental data and theoretical results obtained using alternative approaches. It is established that the
phonon anharmonicity plays a significant role in the formation of elastic and thermal properties of the system under consideration. |
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