A REFLECTION ELECTRON-MICROSCOPIC (REM) STUDY OF ALPHA-AL2O3(0001) SURFACES

被引：30
|
作者：
KIM, Y
HSU, T
机构：
[1] Department of Materials Science and Engineering, University of Utah, Salt Lake City
来源：
SURFACE SCIENCE | 1991年 / 258卷 / 1-3期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0039-6028(91)90908-B
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The alpha-Al2O3(0001) surfaces were investigated with the reflection electron microscopy (REM) technique. The surface step configurations are reviewed in terms of atomic structure and bonding energies. Experimental evidences of step and facet configurations are also given. The characteristics of dislocations on the (0001) surfaces were discussed using Burgers vector directions and magnitudes. Contrast reversal due to the different resonance conditions and lattice termination at different atomic layers within a unit cell is reported. Also examined is the electron-beam-induced damage/contamination.
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页码：131 / 146
页数：16
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