Electronic structures of solids by electron-energy-loss spectroscopy carried out using and electron microscope: oxygen-K and metal-L edges of transition metal oxides

Electron-energy-loss spectra, recorded from ultramicro quantities (<10–12 g), reveal L2,3 edges the energy and intensity of which vary systematically with oxidation state in a series of transition metal oxides; the first ever evidence for structure-sensitive features in oxygen K-edges is reported.