Electronic Structures of Solids by Electron-energy-loss Spectroscopy carried out using an Electron Microscope: Oxygen-K and Metal-L Edges of Transition Metal Oxides

Electron-energy-loss spectra, recorded from ultramicro quantities (<10⁻¹² g), reveal L_2,3 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.