【摘要】 研究了ＺｎＯ晶须与Ｎｉ－Ｚｎ铁氧体复合材料在１～１０００ＭＨｚ范围内的阻抗和对电磁波的反射能力。结果表明，复合材料的阻抗随ＺｎＯ晶须含量增加先急剧下降，后趋于恒定，这是由于复合材料的导电网络形成后，其电导率就逐渐趋于恒定的原因。反射能力随低阻抗ＺｎＯ晶须的增加逐渐增加，且也因阻抗逐渐恒定而趋于恒定。更多还原

【Abstract】 The impedance and reflectance in the range 1～ 1000 MHz of composite consisting of ZnO whiskers and Ni-Zn ferrite was studied. It was found out that the impedance decreased quickly and then became gradually a constant with increase of ZnO whiskers, because the conductance became a constant gradually after the electric network was formed. The reflectance increased. and then became gradually a constant with increase of ZnO whiskers.更多还原