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Measurements of the atomic heat of aluminium from 1.1 to 20° K

✍ Scribed by J.A. Kok; W.H. Keesom

Publisher
Elsevier Science
Year
1937
Weight
363 KB
Volume
4
Category
Article
ISSN
0031-8914

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✦ Synopsis

This paper deals with measurements concerning the atomic heat of aluminium. It appears that above the normal transition point from the superconductive to the non-superconductive state the atomic heat can be represented by Cv = D (419/T) + 0.0003484 T cal/degree mol.

Discussion shows that the density of the energy levels at the limiting energy at T : 0~ is 2.1 times the density corresponding to the 3 p-electrons if they were perfectly free. Susceptibility data would suggest a heat capacity of the conduction electrons of 0.000306 T, which is of the same order of magnitude as the observed value (0.0003484 T).

Below the transition point the atomic heat of aluminium has a higher value than that given by our formula. The atomic heat at the transition point suffers a jump from 0.00089 to 0.00043 cal/degree tool, which corresponds to a value of dH/dT = 143, as calculated by means of Rutgers' formula.

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