The difference between the maximum and minimum energies of a uniaxial single domain particle under an applied field is calculated for a range of orientations of easy axis to field from 0°–90° of arc. From this table the critical fields for discontinuous magnetization rotation over a range of temperatures can be deduced. The remanence coercivity of a randomly oriented array of such particles is plotted from the data.
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P. Gaunt (1968) studied this question.
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