Preparation and structural investigations of titanium substituted Li-Zn ferriets

The mixed ferrites Li0.35 Zn0.30 Tix Fe2.35-x O4 [where x 0.0 to 1.0] were prepared using standard ceramic methods and were sintered at 1150 in static air atmosphere. The formation of ferrite spinel structure was investigated using X-ray diffraction and IR techniques. It was found, that samples with Ti content [x <0.2] have a spinel cubic structure. With increasing titanium content, bulk density and diameter shrinkage were found to decrease, while apparent porosity and grain size increased. Samples with x >0.2 were found to have more than one structural phase

Study of the preparation and characterization of copper ferrite including ferritization of copper scraps

Samples of copper ferrite, CuFe2O4, were prepared using both dry and wet processes, either from powders of iron oxide or from interaction of copper and iron sulfates, or co-precipitation of copper and iron hydroxides from homogeneous sulphate solutions at different pH values. Also, a sample of copper ferrite was prepared in optimum conditions from copper scraps. The effects of temperature and time of ferritization were studied. The prepared samples were investigated by X-ray diffraction analysis, differential thermal analysis, DTA, and scanning electron microscopy, SEM. Optimum conditions were found to depend on the input materials, the pH values, time and temperature