US9263174: Sintered cobalt ferrites composite material with high magnetostriction

Disclosed herein is a sintered cobalt ferrite composite material comprising nano and micron-sized powders of cobalt ferrite with high magnetostriction. The invention further discloses the preparation of nano and micron-sized powders of cobalt ferrite, in particular, the auto-combustion process using glycine as fuel for preparing nano-sized cobalt ferrite powders.