Impact of the sintering temperature on the structural, magnetic and electrical transport properties of doped La0,67Ba0,33Mn0,9Cr0,1O3 manganite

► Crystallite size increase with increasing sintering temperature of La0,67Ba0,33Mn0,9 Cr0,1O3. ► The magnetization and Curie temperature TC decrease, respectively with increasing particle size. ► The La0,67Ba0,33Mn0,9 Cr0,1O3 manganite exhibits a second order FM-PM phase transition. ► Transport properties in high temperature behavior are dominated by the small polaron hopping mechanism.