Abstract
We have investigated the structural, magnetic, and electrical transport properties of a series of ABO3-type perovskite compounds, La0.67Sr0.33Mn1−xVxO3 (0 ≤ x ≤ 0.15). The samples were characterized by X-ray diffrac- tion and data were analyzed using Rietveld refinement tech- nique, it has been concluded that these materials have the rhombohedral structure with R3C space group. The mag- netization and resistivity measurements versus temperature proved that all our samples exhibit a ferromagnetic to para- magnetic transition and a metallic to semiconductor one when the temperature increases. Both the Curie tempera- ture TC and the resistivity transition temperature TP of the composites decrease, while the resistance increases as the V content increases. It has been concluded that the electrical conduction mechanism in the metallic regime at low tem- peratures (T TP).
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