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《Journal of Magnetic Materials and Devices》 2009-04
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Effects of CuO Dopant on the Properties of High Initial Permeability MnZn Ferrite

WANG Hong, WANG Jing-ping, DOU Hai-Zhi Guangdong Fenghua Advanced Technology (Holding) Co, Ltd, Zhaoqing 526020, China  
High μi soft MnZn ferrite with CuO dopant was prepared using traditional oxide wet process and the effects of CuO dopant were researched on the sintering characteristics, microstructure and electro-magnetic properties. The results showed that a proper amount of CuO dopant can effectively reduce the sintering temperature, increase the cut-off frequency, enhance the impedance characteristics of the material without decreasing its initial permeability. Better general properties were obtained for Mn0.48Zn0.47Fe2.05O4 with 0.1wt% CuO dopant firing at 1325 ℃, μi=10860, TC=125℃, fr=250kHz, core coil impedance Z=1420Ω.
【CateGory Index】: TM277
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