ESCA investigations of a magnetic superconductor Y9Co7

ESCA experiment of the relevant core levels and valence bands of Y9Co7 and pure Y and Co have been performed with monochromatised Al Ka radiation. The magnetisation, AC susceptibility and resistivity were also measured as functions of temperature. Some conclusions were drawn about stronger localisation of the d electrons in Y9Co7 than in metallic Co and an enhanced density of d states at the Fermi level in Y9Co7.