The magnetic behavior of a chain of N disks are investigated. The critical field Hcri for the discontinuous jump of the magnetization and the coercive force Hc for the fanning mechanism, and the uniaxial magnetic anisotropy constant Ku are estimated as a function of N, the aspect ratio of the disks, and the magnetocrystalline anisotropy constant K1. By comparing the MH loops calculated and the experiments, the values of K1 and N are obtained for an assembly with random orientation of Ba ferrite particles. This value of K1 agrees well with the experimental results obtained by Fujiwara [IEEE Trans. Magn. MAG-23, 3125 (1987)].
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Ishii et al. (1992) studied this question.
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