Abstract
The structural, electrical and magnetic properties have been investigated on La0.67Sr0.33Mn1−xZnxO3 (x=0.1 and 0.2) system. The samples have been prepared through the conventional solid-state reaction route. All the prepared samples were found in single phase with orthorhombic crystal structure. The crystallite sizes were estimated through X-ray diffraction (XRD) using the Debye–Scherrer's formula. Temperature dependent resistivity data shows metal to semiconducting (M–S) transition for both samples. Magnetization measurements confirm that the Curie-temperature (TC) is found to decrease with Zn doping. The reduction in TC is attributed to the fact that the double-exchange interaction between Mn3+–O2−–Mn4+ network has been destroyed by the substitution of Zn at Mn-site.
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