Synthesis and Structural and Magnetic Properties of Polycrystalline GaMo4Se8

GaMo4Se8, is a lacunar spinel where skyrmions have been recently reported. This compound belongs to the GaM4X8 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 complemented with SEM analysis. The magnetic phase diagram was investigated using DC (VSM) and AC magnetometry, which disclosed the presence of cycloidal, skyrmionic and ferromagnetic phases in polycrystalline GaMo4Se8.

Automated summary

In this study, pure polycrystalline GaMo4Se8 compound was obtained through an innovative two-step synthetic route, and its phase purity and chemical composition were confirmed using the Rietveld refinement of the powder XRD pattern and SEM analysis. The magnetic phase diagram of polycrystalline GaMo4Se8 was investigated using DC and AC magnetometry, revealing the presence of cycloidal, skyrmionic, and ferromagnetic phases.