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The appeared phases and magnetic properties of Sr1-x(La, AM)x ferrites (AM=Na, K) were studied. The prepared samples having the nominal composition of (Sr1-x⋅(La, AM)x)O⋅6Fe2O3, contain α-Fe2O3 phase and M-type ferrite phase. However the single phase of M-type ferrites with nominal compositions of (Sr1-x(La0.5Na0.5)x)O⋅(6-2x)Fe2O3 and (Sr1-x(La0.7K0.3)x)O⋅6-x)Fe2O3, where x=0.2 -0.8, was obtained by the selection of a tie-line composition. The c-axis of M-type ferrites became shoter with increasing x. Their magnetizations, Curie temperatures and anisotropy fields decreased with increasing the amount of substitution of La-AM for Sr.

Synthesis and Magnetic Properties of Sr1-x(La,AM)x-M Type Ferrites(AM=Na,K).