The Thermal Expansion and Heat Capacity of Ni3Al
- 1 January 1987
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 26 (S3-1)
- https://doi.org/10.7567/jjaps.26s3.833
Abstract
The measured heat capacity Cp of a stoichiometric sample of Ni3Al from 0.5 to 15 K is qualitatively similar to earlier data: Cp≈8.9×10-3T+1944(T/470)3+0(T5) J/g.at K. The linear expansivity α can be represented by α≈-0.12T+0.0013T3 (×10-8 K-1) from 10 to 30 K but shows a marked decrease in α/T below 10 K and a jump of +10×10-8 K-1 above Tc≈41 K. The T and T3 terms lead to Grüneisen parameters γT≈-0.5 and γT3 ≈2.5 respectively.Keywords
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