We have investigated the magnetic properties of vanadium oxide nanotubes (VOx -NTs) of various V4+ concentrations. Ferromagnetic response was observed at ∼100 K only in the V4+ -rich water-intercalated VOx -NTs, whose saturation moment is close to that of Li-doped VOx -NTs, a recently-reported room-temperature ferromagnet. The ferromagnetism may have to do with charge localization as well as the spin concentration giving rise to removal of spin frustration according to our previous study.
ASJC Scopus subject areas
- Physics and Astronomy(all)