Revue Science des Matériaux, Laboratoire LARHYSS N°08, Mai 2016 pp. 08-17 D. Hammouche , F. Djani, M. Omari 8 Revue science des matériaux, Laboratoire LARHYSS ISSN 2352-9954 Effect of combustibles on the structural properties of LaFeO 3 synthesized by auto-combustion D. Hammouche , F. Djani, M. Omari Molecular Chemistry Laboratory and Environment, University Mohamed. Khider, 07000 Biskra, Algeria Abstract Lanthanum ferrite, LaFeO 3 , is a perovskite type material with an orthorhombic structure that was synthesized by auto-combustion of different fuels from where we have obtained the structure (in the presence of amine group no further calcination was needed). This perovskite structure was confirmed by : XRD, Infra-red spectroscopy (IR), UV-visible spectroscpy and laser particle size. Key Words : LaFeO 3 , perovskite, auto-combustion, XRD, IR, UV-visible and laser particle size. 1. INTRODUCTION Perovskite oxides consiste of large families among the structures of oxide compounds, and several perovskite-related structures are currently recognized. Typical structures consist of large-sized 12-coordinated cations at the A site and small-sized 6-coordinated cations at the B site [1-2]. Perovskites induces a great interest because of a variety of properties presented in these materials according to the choice of the elements A and B [3] : conducting (insulating, superconducting, ionic conduction, electronic conducting) piezoferroelectricity, ferromagnetism and magnetoresistivity, catalysis at high temperature [4]. One of most common perovskite oxides [5-6], LaFeO 3 nanoparticles exhibited good photocatalytic properties such as water decomposition and dye degradation under visible light irradiation [7-8]. The perovskite oxides are usually synthesized by a variety of methods including the reaction in the solid state [9], co-precipitation technique [10-11], polymerized complex method [12], combustion synthesis [13], spray drying, the cryochemic method (freeze-drying), and the sol-gel (using in particular the amorphous citrate complexes) [9].