RESEARCH ON ELECTROMAGNETIC PROPERTIES OF Pr0.4Ca0.6-XSrxMnO3 COMPOUND IMPLEMENTED BY THE SOLID STATE REACTION METHOD
In this paper, we research the change in structure and electromagnetic properties of Pr0.4Ca0.6-xSrxMnO3 compound, in which Sr (x = 0.0; 0.3; 0.5) substituted for Ca. The samples were prepared by solidphase reaction method. Structural analysis showed that the sample is single-phase and an orthorhomobic structure of the symmetric Pnma group. The magnetic properties of samples increased according to concentrations of Sr doped, it indicated that the double-exchange interaction was more dominant in Srdoped samples. At a given temperature, the resistivity of Sr-doped samples decreased compared to those without Sr. It is observed that the charge ordering phase was stransited at TCO (~ 270 K) in Pr0.4Ca0.6MnO3, and the same phenomenon in other samples, but lower TCO (265 K in Pr0 .4Ca0.3 Sr0.3MnO3 and 175 K in Pr0.4Ca0.1Sr0.5MnO3).
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