X-ray photoemission study of
- 16 July 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 64 (5) , 052510
- https://doi.org/10.1103/physrevb.64.052510
Abstract
A c-axis oriented thin film and a high-density sintered pellet of have been studied by x-ray photoemission spectroscopy, and compared to measurements from MgO and single crystals. The as-grown surface has a layer which is Mg-rich and oxidized, which is effectively removed by a nonaqueous etchant. The subsurface region of the pellet is Mg deficient. This nonideal near-surface region may explain varied scanning tunneling spectroscopy results. The core level and Auger signals are similar to measurements from metallic Mg and transition-metal diborides, and the measured valence band is consistent with the calculated density of states.
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