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NameMilo Adams
Organization or InstitutionFlorida State University
TopicInorganic Chemistry
Title

Stabilization of vanadium ditelluride through iron intercalation

Author(s)

Milo Adams, Judith Clark, V. Ovidiu Garlea, Michael Shatruk

Author Institution(s)

Florida State University Department of Chemistry & Biochemistry
Neutron Scattering Division, Oak Ridge National Laboratory

Abstract

Vanadium ditelluride, VTe2, has been postulated to exhibit a range of unique magnetic and topological properties. Nevertheless, the confirmation of the theoretically predicted behavior remains elusive, due to air-sensitivity of bulk VTe2. We demonstrate that plate-like crystals of Fe0.18VTe grown via chemical vapor transport are air-stable, unlike pure VTe2 which is readily oxidized. Elemental composition was confirmed by energy-dispersive X-ray spectroscopy. Single-crystal X-ray diffraction showed that the material crystallizes in the trigonal space group P-3m1, which matches the symmetry of the VTe2 structure. Magnetic measurements revealed that Fe0.18VTe2 exhibits ferromagnetic (FM) ordering around 120 K. Density-functional theory calculations on Fe0.25VTe2 suggest an FM ground state, in which both Fe and V atoms carry a moment of ~1.6 μB/atom at 0 K. The present study suggests that transition metal intercalation of VTe2 leads to a more stable structure, well-suited for more in-depth characterization, e.g., by transport and magnetoresistance measurements.