Preparation and Microwave Absorption Properties of Carbonyl Iron/ La1-xSrxMnO3 (x=0.3, 0.4 and 0.5) Composites

With different weight ratio of carbonyl iron powder and La
_1-x
Sr
_x
MnO
₃
(x=1.3, 0.4, 0.5) powder have been prepared by physical method. The structure, morphology and microwave absorption properties have been investigated. The results show that the ratio of carbonyl iron powder to La
_1-x
Sr
_x
MnO
₃
has great influence on reflection loss. The optimal absorption property can be obtained when the weight ratio of the carbonyl iron powder to La
_0.06
Sr
_0.4
MnO
₃
is 30:1, which is attributed to the balance of the electric-magnetic match.