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When a paramagnetic salt is placed in a high frequency alternating magnetic field which is perpendicular to a static magnetic field, energy may be absorbed by the salt in a resonant fashion for a range of values of the steady field. These paramagnetic losses have been investigated for three manganous, two cupric, and one chromic salt at a frequency of 9375 mc/sec. Well-defined absorption maxima were obtained in all cases, and absolute values of ^'', the imaginary part of the high frequency magnetic susceptibility, are presented.
Cummerow et al. (Mon,) studied this question.