Vanadium-oxide nanotubes, synthesized through hydrothermal treatment of a vanadium oxide- alkylamine composite, were studied by means of electron spin resonance (ESR). The ESR spectra were composed of a broad Lorentzian line superposed by a hyper.ne s...
Vanadium-oxide nanotubes, synthesized through hydrothermal treatment of a vanadium oxide- alkylamine composite, were studied by means of electron spin resonance (ESR). The ESR spectra were composed of a broad Lorentzian line superposed by a hyper.ne structure, from which the uniaxial g-tensor and the hyper.ne coupling tensor were obtained both for the nanotube and the composite. The eight-line hyper.ne splitting structure appears to indicate that the 3d electrons of the V4+ nuclei interact with only one vanadium nucleus and, thus, are strongly localized. The hyper.ne splitting in the nanotubes was much greater than it was in the V2O5 single crystal, which is apparently ascribable to the curvature of the vanadium-oxide layers.