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Nanometer Ni0.5Zn0.5Fe2O4 powders with spinel phase were prepared by the hydrothermal method using purified FeSO4 solution from sodium jarosite’s slag as materials. The results show that the spinel phase of Ni0.5Zn0.5Fe2O4 powders begins to form at a relatively low temperature (130 °C) and a shorter holding time (1 h) when pH=8. The crystallization kinetics equation at 200 °C is ln[-ln(1−x)] = −0...
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