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ULTRAMICROSCOPY
Volume 93, Issue 2, Pages 147-159Publisher
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DOI: 10.1016/S0304-3991(02)00155-9
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Fluctuation electron microscopy is a technique for studying medium-range order in disordered materials. We present an implementation of fluctuation microscopy using nanodiffraction in a scanning transmission electron microscope (STEM) at a spatial resolution varying from 0,8 to 5.0 nm. Compared to conventional TEM (CTEM), the STEM-based technique offers a denser scattering vector sampling at a reduced sample dose and easier access to variable resolution information. We have reproduced results on amorphous silicon previously obtained by CTEM-based fluctuation microscopy, and report initial variable-resolution measurements on amorphous germanium. (C) 2002 Elsevier Science B.V. All rights reserved.
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