用sol-gel法获得了两种铁氧体复合材料:以镁橄榄石为基体的Ni-Zn铁氧体复合材料和以MAS为基体的Ni-Zn铁氧体复合材料.比较了这两种复合材料的结晶性能和烧结性能.两种复合材料在射频区(100MHz～1GHz)的磁性能优于纯Ni-Zn铁氧体,这种优于纯Ni-Zn铁氧体的磁性能与复合材料的显微结构密切相关:复合材料中Ni-Zn尖晶石晶粒的尺寸较一般纯Ni-Zn铁氧体晶粒尺寸小一个数量级,晶粒间的磁相互作用较纯铁氧体晶粒间弱.
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