Author:
Brock J. C. F.,Huntley D. J.
Abstract
Thermal conductivity measurements on lanthanum cobalt nitrate in the temperature range 1–5 °K and in magnetic fields up to 20 kOe are described. The data are analyzed in terms of a simple model in which phonons that are on speaking terms with the paramagnetic cobalt ions are completely removed from the heat flux; this allows one to calculate the mean free path of these phonons due to other processes. In crystals of low thermal conductivity the interacting phonons are not completely removed from the heat flux and the model, extended to include this, allows one to determine the strength of the spin–lattice interaction.
Publisher
Canadian Science Publishing
Subject
General Physics and Astronomy
Cited by
6 articles.
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