Abstract
Structural, electrical, and magnetic properties of La0.65(Ca0.30Pb0.05)Mn0.90Cu0.10O3 compound were investigated. The compound, prepared by the sol–gel route, was pressed into pellets and one of them was sintered at 900°C and the other at 1000°C for 24h. The aim of the study was to explore structural, electrical and magnetic properties of the compound. Temperature dependent X-ray powder diffraction studies on the sample sintered at 900°C reveal an orthorhombic-Pbnm perovskite structure through the temperature range between 320K and 86K. Scanning electron microcopy and energy dispersive spectroscopy analyses showed grainy, homogeneous and stoichiometric structure. Magnetization and resistivity measurements reveal that the Curie temperatures, TC, and insulator–metal transition temperatures, TIM, coincide, but the samples sintered at 900°C also exhibit thermal hysteresis both in magnetization and resistivity upon cooling and warming.
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