Elsevier

Physica

Volume 30, Issue 1, January 1964, Pages 229-236
Physica

Heat capacities of the metals terbium and holmium below 1°K

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Abstract

The heat capacities of terbium and holmium metal have been studied between 0.05 and 0.9°K. In this temperature region the main portion of the nuclear spin entropy is removed and quite accurate values for the parameters of the h.f.s. interaction can be obtained from the experimental data. The results for the magnetic and the electric h.f.s. parameters respectively are a′= +0.320±0.005°K, P=+0.008±0.0015°K for Ho, a′ = +0.152 ± 0.002°K, P = + 0.013 ± 0.004°K for Tb.

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