Generalized Grüneisen parameters and low temperature limit of lattice thermal expansion of cadmium and zirconium |
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Authors: | S Sindhu C S Menon |
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Institution: | (1) Department of Instrumentation, Indian Institute of Science, 560 012 Bangalore, India;(2) School of Pure and Applied Physics, Mahatma Gandhi University, 686 560 Kottayam, India |
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Abstract: | The generalized Grüneisen parameters (γ′
j
) and (γ″
j
) for cadmium and zirconium were calculated from the second- and third-order elastic constants to determine the low temperature
limit of the volume thermal expansion of these metals of hexagonal symmetry. The low temperature limit of cadmium and zirconium
was calculated to be positive values indicating a positive volume expansion down to 0 K even though many Grüneisen gammas
were found to be negative. |
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Keywords: | Thermal expansion elastic constants Grüneisen gammas |
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