Synthesis and Structural and Magnetic Properties of Polycrystalline GaMo4Se8

Abstract

GaMo4Se8, is a lacunar spinel where skyrmions have been recently reported. This compound belongs to the Ga (Formula presented.) family, where M is a transition metal (V or Mo) and X is a chalcogenide (S or Se). In this work, we have obtained pure GaMo4Se8 in polycrystalline form through an innovative two-step synthetic route. Phase purity and chemical composition were confirmed through the Rietveld refinement of the powder XRD pattern, the sample characterisation having been complementedwith SEM analysis. The magnetic phase diagram was investigated using DC (VSM) and ACmagnetometry, which disclosed the presence of cycloidal, skyrmionic and ferromagnetic phases inpolycrystalline GaMo4Se8.