Abstract
Zn0.5Ni0.5Fe2 O 4 nanoparticles have been produced by glycol-thermal reaction and high-energy ball milling. The synthesis route appears to have some effects on the magnetic properties. The Mossbauer spectra indicate ordered magnetic state. The Curie temperature (T C ) was measured by zero velocity Mossbauer technique and found to be 548 ±3 K for the bulk Zn0.5Ni0.5Fe2 O 4 oxides. A higher T C = 583 ±3 K has been observed for the same compound produced by milling. This is attributed to the redistribution of Zn atoms on both tetrahedral (A) and octahedral (B) sites in the milled compounds. The magnetization measurements indicate superparamagnetic nature of the nanosized particles.
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