The amorphyzation of a crystalline layered ferro- and antiferromagnet with randomly distributed interlayer exchange parameters is investigated by the use of newly developed effective field theory, Two typical amorphizations of interlayer exchange parameters are studied. The phase diagrams are obtained. The analytical behaviours of magnetization near the spin glass phase boundary at T =0 are studied in details for each case. We find that the order of transition from the ferromagnetic phase to the spina glass phase depends on the distribution function of interlayer exchange parameters.
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Kaneyoshi et al. (1980) studied this question.
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