Abstract:Nanocrystalline Ni-Zn ferrites powder were prepared by spraying鄄coprecipitation method. Permeabili鄄
ty of nanocrystalline Ni-Zn ferrite/ epoxy resin composite were measured with Agilent impedance analyzer in the range
of 10 to 110 MHz. The results show that the grain size of Ni-Zn ferrite by spraying鄄coprecipitation method is about 30
nm calcined at 600益for 1. 5 h. With the decrease of epoxy resin and the increase of forming pressure, the real part
of permeability 滋忆of the composition increases and its imaginary permeability 滋义decreases gradually. Under the same
process conditions, the real part of permeability 滋忆of the composition increases and its imaginary permeability 滋义de鄄
creases with the increas of the grain size of nanocrystalline Ni-Zn ferrite. The maximum permeability for nanocrystal鄄
line Ni0. 4Zn0. 6Fe2O4 ferrite can be obtained.
