High-resolution electron energy loss studies of some transition metal oxides
- 7 August 1989
- journal article
- letter
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 1 (31) , 5313-5318
- https://doi.org/10.1088/0953-8984/1/31/033
Abstract
High resolution electron energy loss spectra have been measured for a variety of first-row transition metal oxides for loss energies of up to 5 eV. The features observed are qualitatively consistent with the electronic properties of these materials (i.e., a highly damped plasmon for metals, and local d-d excitations for insulators), with the notable exception of CuO. Quantitatively, however, the intensities of the d-d transitions are an order of magnitude greater than expected from optical dipole strengths, and the authors evaluate possible explanations for this.Keywords
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