通过反射电子显微镜对氧化镁表面进行制备与表征。
Preparation and characterization of MgO surfaces by reflection electron microscopy.
作者信息
Crozier P A, Gajdardziska-Josifovska M, Cowley J M
机构信息
Department of Physics, Arizona State University, Tempe 85287-1504.
出版信息
Microsc Res Tech. 1992 Feb 15;20(4):426-38. doi: 10.1002/jemt.1070200412.
We have employed several different methods to prepare (100) and (111) surfaces of MgO crystals. (100) surfaces prepared by simple cleaving give good reflection high energy electron diffraction (RHEED) patterns and surfaces with a high density of coarse steps. Chemical polishing of this surface results in a roughening of the topography whilst annealing in oxygen considerably smoothens the surfaces although they appear to be contaminated. Under certain conditions we find that the MgO crystals will cleave along the (111) plane. Both cleaved and mechanically polished (111) surfaces are atomically flat and reconstructed after oxygen annealing.
我们采用了几种不同的方法来制备氧化镁晶体的（100）和（111）表面。通过简单解理制备的（100）表面给出了良好的反射高能电子衍射（RHEED）图案以及具有高密度粗台阶的表面。对该表面进行化学抛光会导致形貌粗糙化，而在氧气中退火虽然表面似乎被污染，但会使表面相当程度地平滑。在某些条件下，我们发现氧化镁晶体会沿（111）平面解理。解理的和机械抛光的（111）表面在原子尺度上都是平整的，并且在氧气退火后会发生重构。
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