Al2O3/Fe2O3 nano-composites were prepared by sol-gel route. The effect of Fe2O3 content on the structure, grain size and characterization of the composite were
Pr Doped BaTi4O9 gel Was prepared by sol-gel method using Ti (OC4H9) 4, Ba (CH3COO) 2, CH3COOH and CH3OCH2CH2OH as law materials. Through analyzing dry gel ther