Can Kβ" Bands Be a Probe for State-selective XAFS Measurements ?

Abstract

Fe Kβ" resonant inelastic X-ray scattering (RIXS) spectra of a typical mixed-valence compound, Fe₃O₄, have been measured as a function of both excitation and emission energies by using a high-resolution (∼0.7 eV) X-ray emission spectrometer with large acceptance. Partial fluorescent yield (PFY) spectra show no emission-energy dependence, indicating that the Fe Kβ" band of Fe₃O₄ can not be employed as a probe for valence-selective XAFS. Strong influences of the Kβ_1,3- and Kβ_2,5-RIXS on the Kβ" band will make it difficult to accurately deduce selective-XAFS from Kβ" PFY spectra also for other materials.