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This report discusses the application of electron magnetic resonance techniques to defect and impurity sites in solids, conduction electrons in metals, ferromagnetic, ferrimagnetic and antiferromagnetic materials. It also reviews the recent experiments on cyclotron resonance in semiconductors together with a brief account of some experiments involving the non-resonant absorption of microwaves by conductors at low temperatures and by ferrites.
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Bagguley et al. (1957) studied this question.
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