화학공학소재연구정보센터
Journal of Vacuum Science & Technology B, Vol.15, No.5, 1623-1627, 1997
Tensor Low-Energy-Electron Diffraction Study for the Structure of a Cr(001)-P-(1X1)-N Surface
The structure of the Cr(001)-p-(1X1)-N surface was studied by use of the tensor low energy electron diffraction (LEED) current-voltage (I-V) analysis. From the LEED diffraction pattern observed in the process of cleaning of the Cr(001) surface, N was found to form a (1X1) structure on the Cr(001) surfacer Experimental I-V characteristic curves for the Cr(001)-p-(1X1)-N structure were generated by Video LEED System and these experimental results were compared with that obtained through theoretical calculations via the TLEED program to analyze surface structure. As a result, we found that N is adsorbed in the hollow site on the Cr(001) surface. The interlayer distances of d(N1), d(12), and d(23) are found to be 0.251, 1.814, and 1.410 Angstrom, respectively.