Abstract
The effects of compositional variation on magnetic susceptibility, saturation magnetization, Curie temperature and magnetic moments of Cu 1− x Zn x Fe 2O 4 ferrites, where x=0.0, 0.25, 0.50, 0.75, 1.00 are reported. The Curie temperatures have been evaluated by measuring AC magnetic susceptibility using a mutual inductance technique. On increasing Zn content from 0.0 to 0.75, the Curie temperature and the saturation magnetization increase. On further increase in Zn content, x>0.75, a decreasing trend is exhibited. This effect can partially be related to the low magnetic moments of Zn +2 ions. The Y–K angle increases gradually with increasing zinc content and extrapolates to 90° for ZnFe 2O 4. From the computation of Y–K angles for Zn substituted ferrites (0< x<0.75), it can be concluded that the mixed zinc ferrites exhibit a non-collinearity of the Y–K type while CuFe 2O 4 shows a Néel type of ordering.
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