Synthesis, structure and electric studies for La0.7A0.3Mn0.96(InxAl(1−x))0.04O3; A=Ca and Sr perovskites

The reduced resistivity [R(T)/R(Tρ)] vs. the reduced temperature [T/Tρ] of (Al and In) doped La0.7Ca0.3MnO3-manganites. The variation of the amplitude of the giant resistive peak ΔR(T)/R=[R(Tρ)-R(T288K)]/R(T288K) with In content x (inset).