Abstract
Spinel ferrites (Ni_0.5Zn_0.5)_1-x-yCo_xCu_yFe₂O₄, (x = 0 and y = 0, x = 0.2 and y = 0, x = 0.1 and y = 0.1, x = 0 and y = 0.2) were prepared by sol-gel method and post-annealed at 1100 ^oC. The grain growth of the sample is very sensitive..... More