Abstract
Some experiments carried out to synthesize nickel ferrite by hydrothermal method are described and a short discussion on the mechanism.of the formation is given.
Spinel type ferrite was easily formed from either the co-precipitated hydroxide made from the solution of constituent sulphates or the wet mixture of two hydroxides-ferric hydroxide and nickel hydroxide-suspended in water at pH 11.
It was rather difficult to synthesize the ferrite from the dry mixture of the two hydroxides. Precipitating agent and pretreatment of the ferric hydroxide were found to have a large effect on the formation.
