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Summary Calculations are described of the remanent magnetization and the remanence after demagnetization as a function of field strength for powders of haematite, αFe2O3. The calculations are based on the assumptions that the powder particles are single domains and that their hysteretic properties are due to magnetocrystalline anisotropy with threefold symmetry in the basal crystal plane. The calculations are intended for eventual comparison with experiments now in progress.
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E.P. Wohlfarth (1955) studied this question.
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