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Item Metadata only Magnetization of a spinel ferrite(Mahidol University. Mahidol University Library and Knowledge Center, 1987) Vichit Pinitchun; Tang, I-MingA molecular field theory for mixed spinel ferrites is developed which takes into account the disorder caused by the random arrangement of the two types of magnetic ions both of the sublattices of the spinel structure. The case of the mixed state... points of the mixed spinel ferrites are the same for both cases. The expressions for the local field fluctuations are, however, different for the two cases. The temperature behaviors of the configuration averages of the four different spins in CoFe(,2)O