Photoabsorption study of the electronic structures of Ni3Al, Ni3Ga, Ni3In, and Ni13In9

X-ray absorption near-edge spectroscopy (XANES) spectra at the Ni K-, In L3-, and In K-edge of Ni3In and Ni13In9 are presented and compared with theoretical XANES spectra and site- and momentum-decomposed partial density of states derived from first-principles calculation. The agreement between theory and experiment is better for Ni3In than for Ni13In9. Extended X-ray absorption fine structure spectra of Ni3Al, Ni3Ga, Ni3In, and Ni13In9 are also analyzed to yield the bonding parameters.