Etudiant : EL HAIDAMI LAILA

Filière : Master Matériaux et Applications pour l’Energie Photovoltaïque (MAEP)

Encadrant : Pr. MRHARRAB LAMIAE

Annèe : 2024

Résumé : This work explores the importance of synthetic double perovskites in the fields of lasers, magnetic devices, and optoelectronics. Several researchers are studying new oxide materials with multiple properties, particularly multiferroic and magnetoelectric materials. In this work, the strategy chosen to promote the formation of such compounds involves the use of Bi cations, which can favor the emergence of a non-centrosymmetric structure, and the use of certain cations that carry a magnetic moment, such as Fe and Co. The objective of this research study is to determine the effect of substituting the BB' cations of the Bi2BB'O6 double perovskite structure with the cation pairs FeCd, CoCd, and FeCo on the crystalline phases, the calcination temperatures necessary for powder crystallization, and the cell parameters and volumes. In brief, this study focuses on the structural properties of the samples developed within the LPAIS laboratory in the physics department at FSDM. The structural analysis we conducted using Xray diffraction and Raman spectroscopy provides essential information on the crystalline structure of these materials. Indeed, we observed that all the samples developed crystallize in a monoclinic phase with space group P2/m.