Effect of Bi2O3 and Sintering Temperature on the Ultrasonic Properties of Mn-Zn Ferrite

The pure and mixed Mn-Zn ferrites with Bi2O3 were prepared by using the conventional ceramic technique at various sintering temperatures (t) of 800 1200 0C. The additions of Bi2O3 were used to promote grain growth and to increase magnetic permeability during sintering of Mn-Zn ferrites. The Ultrasonic velocity (vl), attenuation coefficient () and density () studies in pure Mn0.58Zn0.37Fe2.05O4 and mixed ferrite with Bi2O3 at 2 MHz frequencies using Pulse Echo Selection (PES) technique was reported. The results were discussed and analyzed in the light of micro-structural and ultrasonic properties.