Photoemission measurements have been made of the intermetallic compound Pd 2 TiAl utilizing synchrotron radiation in the energy range 40-180 eV. The valence band extends to a binding energy of 7 eV. Measurements made at the Cooper minimum for Pd 4d indicate that the highest density of states for Ti 3d is at the Fermi edge and that it decreases towards higher energy. Using this density of states and correcting for the photoemission cross-sections with energy, it has been possible to determine the density of states for Pd 4d which also contributes to the Fermi level. Resonance photoemission measurements are consistent with this conclusion and also indicate that the Pd 4d band is not completely full.

The ordered alloy, Pt2Cr has the L12 structure and is ferrimagnetic with Tc=170 degrees C. Angle-resolved photoemission experiments using synchrotron radiation (18-45 eV) have been made in normal take-off geometry from the (110) surface in order to elucidate the band structure. The valence band energy-momentum relationship in the Gamma Sigma M direction has been determined assuming a free-electron final state. The symmetries of these initial states have been determined using the polarization of the synchrotron radiation.

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