P and S K-edge XANES of transition-metal phosphates and sulfates

摘要: Abstract Electronic structures of several 3d transition-metal phosphates and sulfates have been studied using total-electron-yield X-ray absorption near-edge structure (TEY-XANES) spectroscopy. In P S K-edge XANES spectra that relate to the electron transitions from 1s 3p-dominant unoccupied states, respectively, two peaks are observed when number electrons cations is less than nine, whereas only one peak ten. With increase electrons, lower-energy (pre-edge peak) decreases in intensity shifts side with discontinuity at five higher-energy (main simply without such discontinuity. The changes pre-edge indicate density energy level or states which suggests 3p hybridize cations. shift main peak, would be associated hybridization 4s cations, can explained by depression levels core electrons.