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Here we report the structural, electrical and magnetic properties of Fe dopedLa0.7Ca0.3Mn1-xFexO3 with x = 0.0 to 1.0 prepared by conventional solid statereaction method. Simulated data on XRD shows an increase in volume with anincrease in Fe ion concentration. XPS supports that Fe3+ ions directlysubstitute Mn3+ ions. Shifting towards lower wave-number and symmetric IR bandstructure confirms increase in volume and homogeneous distribution of Fe ions.Fe ion doesn't contribute in double-exchange (DE) conduction mechanism due toits stable half filled 3d orbital. The presence of Fe3+ ions encouragesanti-ferromagnetism (AFM) generated by super-exchange interaction and suppressinsulator-metal transition temperature (TIM). Magnetic measurements show theexistence of magnetic polarons supported by increase in volume of unit cell anddeviation from Curie-Weiss law.

Fe ion doping effect on electrical and magnetic properties of La0.7Ca0.3Mn1-xFexO3 x = 0.0 to 1.0