Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8038242 | Ultramicroscopy | 2014 | 4 Pages |
Abstract
The electron mean-free-path in Si was measured by EELS using the test structure with the certified dimensions as a calibration standard. In a good agreement with the previous CBED measurements, the mean-free-path is 150Â nm for 200Â keV and 179Â nm for 300Â keV energy of primary electrons at large collection angles. These values are accurately predicted by the model of Iakoubovskii et al. while the model of Malis et al. incorporated in common microscopy software underestimates the mean-free-path by 15% at least. Correspondingly, the thickness of TEM samples reported in many studies of the Si-based materials last decades might be noticeably underestimated.
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Authors
P.L. Potapov,