Electronic-Structure Study of a Co-A1 Alloy

Author: Li-Shing Hsu(Department of Physics, National Chang-Hua University of Education),S.-C. Chung(Synchrotron Radiation Research Center, Hsinchu),G.-H. Gweon(Randall Laboratory, University of Michigan, Ann Arbor, MI)

Vol.&No.：Vol. 46, No. 1
Date：October 2001
Pages：13-22
DOI：10.6301/JNTNU.2001.46.02

Abstract：

The electronic structure of a Co-Al alloy was studied by high-resolution x-ray photoemission spectroscopy, Bremsstrahlung isochromat spectroscopy, resonant photoemission spectroscopy, and x-ray-absorption spectroscopy (XAS) at the L2,3 edges of Co. The asymmetry index of the Co 2p core levels for this Co-Al alloy is larger than that for Ni3Al and for CoGa. This observation implies that the density of states at the Fermi level for this Co-Al alloy should be larger than that for Ni3Al. The number of 3d holes per Co atom is 0.7 as determined from the XAS spectrum.

Keywords：Transition Metals and Alloys X-ray Absorption Spectra Photoemission Spectra

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