Bridging Structure, Magnetism, and Disorder in Iron-Intercalated Niobium Diselenide, Fe_xNbSe₂, below x = 0.25.

ABSTRACT: Transition-metal dichalcogenides (TMDs) intercalated with magnetic ions serve as a promising materials platform for developing next-generation, spin-based electronic technologies. In these materials, one can access a rich magnetic phase space depending on the choice of intercalant, host lattice, and relative stoichiometry. The distribution of these intercalant ions across given crystals, however, is less well defined-particularly away from ideal packing stoichiometries-and a convenient probe to assess potential longer-range ordering of intercalants is lacking. Here, we demonstrate that confocal Raman spectroscopy is a powerful tool for mapping the onset of intercalant superlattice formation in Fe-intercalated NbSe₂ (Fe_xNbSe₂) for 0.14 ≤ x < 0.

SUBMITTER: Erodici MP 

PROVIDER: S-EPMC10226111 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature