Study of structural, electrical and magnetic properties of Zn doped La0.67Sr0.33MnO3 (original) (raw)

The structural, electrical and magnetic properties have been investigated on La 0.67 Sr 0.33 Mn 1−x Zn x O 3 (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 (T C ) is found to decrease with Zn doping. The reduction in T C is attributed to the fact that the double-exchange interaction between Mn 3+ -O 2− -Mn 4+ network has been destroyed by the substitution of Zn at Mn-site.