中文摘要：

采用真空球磨法制备FeNi3合金，溶胶一凝胶法制备La0．6Sr0．4MnO3，将FeNi3合金与La0．6Sr0．4MnO3按不同比例混合后进行真空球磨复合。样品吸波性能测定发现，FeNi3合金的添加有利于提高La0．6Sr0．4MnO3的吸波量。提高程度与混合比例密切相关，当混合比例为1：3时提升效果最好，同时发现复合后低频段的吸波性能改善更加显著，其中1：3比例样品低频率段吸收量较La0．6Sr0．4MnO3有近4倍的提高。

英文摘要：

The FeNi3 was prepared by vacuum smelting and the La0.6Sr0.4MnO3 was prepared by sol-gel method, then FeNi3 and La0.6Sr0.4MnO3 was mixed in different proportions by vacuum ball miling method. It was found by the test that the addition of the FeNi3 can improve the microwave absorbing performance, which is closely related to the mixture ratio, and the promotion effect is best when the mixture ratio is 1：3. The microwave absorption was significant increased at low frequency. The microwave absorp＇ tion of the composites with the mixture ratio of 1：3 had a 4 times increase than La0.6Sr0.4MnO3.