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The electronic structures of AgNi1-xCoxO2 (0 les x les 1) delafossite oxides have been investigated by employing photoemission spectroscopy (PES) and X-ray absorption spectroscopy (XAS) in the soft X-ray regime of synchrotron radiation. The Ag 3d core-level PES spectra shift toward the higher binding energy with increasing x, in agreement with the metallic nature for low values of x and the insulating...
The polarization dependence for the electronic structure of Bi4Ti3O12 (BIT) single crystal has been studied by soft-X-ray emission spectroscopy (SXES) and X-ray absorption spectroscopy. The valence band and conduction band are mainly composed of O 2p state and Ti 3d state, respectively. The SXES spectra measured at the Ti 2p absorption edge region exhibit three structures, which correspond to elastic...
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