Ledge configurations on alkali halide surfaces evaporated in an electrostatic field
作者： Z.A. Munir , E.K. Chieh , J.P. Hirth
DOI: 10.1016/0022-0248(83)90212-9
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摘要: Abstract The ledge structure of alkali halide crystals evaporated in the presence an external field was investigated over range 613–733 K. application a along 〈100〉 during evaporation resulted significant increase relative concentration screw-related lamella on vacuum cleaved (100) surfaces NaCl. In addition, found to enhance nucleation disc-shaped holes (DSH) between ledges surfaces. 〈110〉 marked length this orientation for square spirals and roughening portions concentric loops related direction. Evidence skewing observed which were cut at angle from toward (111) plane subsequently field. had no apparent effect morphology Ca-doped KCl crystals. These observations are interpreted terms surface charge concept consistent with terrace-ledge-kink theory evaporation.
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