用蔗糖-硝酸盐法制备钡铁氧体,用原位聚合沉积技术在其表面包覆了一薄层聚苯胺.扫描电镜结果显示,聚苯胺包覆钡铁氧体后表面形貌发生明显改变;红外光谱和物理性能测试系统结果表明,在钡铁氧体颗粒表面和聚苯胺间存在某种化学作用;微波网络分析仪测试表明,在2～16GHz频率范围内,复合材料的复磁导率变化不大,复介电常数有明显增加,主要是由于聚苯胺在电场作用下的极化,铁氧体和聚苯胺之间形成大量的界面,增强了不同介质之间的界面极化所致.
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