Synthesis of Zn-Fe Ferrite Powders by Thermite Method

Abstract

A new technique for synthesizing Zn_sFe_3-xO₄powders from α-Fe₂O₃ and Zn under an argon flow by the thermite method is presented. The Zn_xFe₃, O₄ fine powders (O.3 to O.6μm) of single phase were successfully synthesized at 500 °C for 3 h using the powder mixture of Zn/α-Fe₂O₃=0.35 (molar ratio). The saturation magnetization and coercive force of the ZnxFe_3-xO₄ powders were 97 emu/g and O.11 kOe, respectively.