The lattice parameters of all samples showed no significant changes, but the average crystallite size showed an increasing trend with the increase in calcination temperature.
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Effects of Nonmagnetic Zn<sup>2+</sup> Ion and RE Ion Substitution on the Magnetic Properties of Functional Nanomaterials Co<sub>1-y</sub>Zn<sub>y</sub>RE<sub>x</sub>Fe<sub>2-x</sub>O<sub>4</sub> (RE = La, Sm, Gd) by Sol-Gel.
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