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The growth of copper upon alumina is of interest [1-3] due to its role as a catalyst in petrochemical processes. Studies by electron microscopy disagree [4, 5] as to whether or not a Cu(111) stucture grows parallel to a sapphire α-Al2O3(0001) at high temperatures (900-10800C). In the previous work we have reported [6, 7] results on the development of the surface electronic stuctures and on the thermal stability of deposits of copper onto α-Al2O3(0001) surfaces. In the present paper we report on further Auger electron spectroscopy (AES) and low-energy electron diffraction (LEED) studies on the surface geometric structure of Cu deposited on this substrate.

Surface Geometric Structures of Cu Deposited upon α-Al2O3(0001)

Surface Geometric Structures of Cu Deposited upon α-Al₂O₃(0001)