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Size and Thermal Conductivity Effects in Paramagnetic Relaxation
Phys. Rev. 84, 548 – Published 1 November, 1951
DOI: https://doi.org/10.1103/PhysRev.84.548
Abstract
The Casimir-du Pré thermodynamic theory of paramagnetic relaxation is generalized by taking account of the thermal conductivity of the paramagnetic salt. The case of a spherical specimen in a constant temperature bath is considered. One finds that infinitely many times are required to characterize the relaxation when a magnetic field is suddenly applied. The alternating current susceptibility is calculated and is shown to contain terms depending on the size and thermal conductivity of the specimen. A limited comparison of the theory with experimental data is made.
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