Effect of Sn substitution on structural and transport properties of (La0.67Sr0.33)MnO3

Abstract

We investigate the effects of Sn substitution on structural and electrical transport mechanism of polycrystalline samples La0.67Sr 0.33Mn1-xSnxO3 (x = 0, 0.05, 0.10, 0.15). Resistivity data have been fitted with the variable range hopping model to estimate the density of state at Fermi level. It was observed that the substitution of Sn in the series leads to a decrease in conductivity of the doped manganites samples, with conduction being controlled by the disorder induced localization of charge carriers. The value of M-I transition temperature (TP) decreases while resistivity increases with Sn substitution. © 2013 AIP Publishing LLC.