X-ray Emission Spectroscopy of Ta-Related Oxides

Abstract

We performed X-ray emission spectroscopy (XES) by using a double crystal spectrometer. Ta-L_α1 and L_α2 emission lines of Ta-related materials of Ta-metal, Ta₂O₅, LiTaO₃, and KTaO₃ were measured. XES is one of the most important spectroscopies to make a remarkable progress utilizing third generation synchrotron radiation sources. Here, we discuss some aspects of XES in Ta compounds of recent experimental data. We also discuss an azimuth dependence of partial fluorescence yield spectra (PFY) of a single-crystal KTaO₃. The precise measurement by the double crystal spectrometer has revealed a change of the PFY spectrum by changing the crystal orientation, especially in the white line region.