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Ion milling–Auger electron spectroscopy has been used to study, for the first time, the chemical widths of ’’abrupt’’ LPE AlxGa1−xAs-GaAs heterojunctions with composition x=0.43, 0.60, and 0.85. ’’Abrupt’’ LPE junctions were found to have chemical interface widths of <90–130 Å.
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Garner et al. (1977) studied this question.
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