Electron Energy Loss of Rare Earth Vanadates:RVO_4(R=Sc,Y,La,Eu and Gd)

概要

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Electron energy-loss spectra of RVO4 (7<=Sc, Y, La, Eu and Gd) are measuredto elucidate primary excitation processes in cathodoluminescence. To help assignloss spectra, calculation of optical constants and measurement of X-ray photo-electron spectra arc also made. The loss spectra show seven or eight peaks withfour different types of origins: (l) internal transitions, in the VOI complexobserved as small peaks below 10 eV, (2) plasmon excitation inducing the largestpeak at 13 to 14 eV, (3) excitation of a core p-electron of R-tons giving rise toanother large peak at 28 to 40 eV and (4) excitation of a V 3p-electt'on observedas a small peak at 47 to 51 eV. Thus, the importance of core-electron excitation incathode-ray excitation is emphasized.
社団法人日本物理学会の論文
1978-11-15