Add time:07/26/2019         Source:sciencedirect.com

SynopsisParamagnetic relaxation experiments have been made on powders and single crystals of some cobalt salts by means of a Hartshorn bridge. A new method of measuring long relaxation times is described. A deviation parameter is introduced to describe the difference between the experimental dispersion and absorption curves and Casimirdu Pr theory. In cobalt ammonium sulphate the relaxation parameters depend on the parallel magnetic field in a remarkable way. Double relaxations and an anomalous dependence of the high frequency susceptibility on the magnetic field are found. The crystalline anisotropy of these phenomena is studied. In some cases a very strong dependence of the relaxation parameters on temperature (T7) is observed.

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