Abstract: The microwave absorbing behaviour of Mn-Zn ferrite sintered at 1100,1200,1300,1400 and 1500℃ has been investigated.The phase constitution of the ferrite was analyzed by X-ray diffraction.The results show that the ferrite sintered at 1 500℃ has better microwave absorbing prop- erty than those prepared at other temperatures,due to the increase of turbulent loss generated by the formation of excessive Fe~(2+) in deoxidizing of Fe_2O_3 at high temperatures.

Key words: Mn-Zn ferrite, sintering temperature, microwave absorbing behaviour