Early Results from an Aberration-Corrected JEOL 2200FS STEM/TEM at Oak Ridge National Laboratory

The resolution-limiting aberrations of round electromagnetic lenses can now be successfully overcome via the use of multipole element “aberration correctors.” The installation and performance of a hexapole-based corrector (CEOS GmbH) integrated on the probe-forming side of a JEOL 2200FS FEG STEM/TEM...

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Bibliographic Details
Published in:Microscopy and microanalysis 2006-12, Vol.12 (6), p.483-491
Main Authors: Blom, Douglas A., Allard, Lawrence F., Mishina, Satoshi, O'Keefe, Michael A.
Format: Article
Language:English
Subjects:
Air flow
Aperture
Automotive materials
Catalysts
Design
Electron microscopes
Magnetic fields
Noise
Single crystals
Software
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Summary:The resolution-limiting aberrations of round electromagnetic lenses can now be successfully overcome via the use of multipole element “aberration correctors.” The installation and performance of a hexapole-based corrector (CEOS GmbH) integrated on the probe-forming side of a JEOL 2200FS FEG STEM/TEM is described. For the resolution of the microscope not to be severely compromised by its environment, a new, specially designed building at Oak Ridge National Laboratory has been built. The Advanced Microscopy Laboratory was designed with the goal of providing a suitable location for aberration-corrected electron microscopes. Construction methods and performance of the building are discussed in the context of the performance of the microscope. Initial performance of the microscope on relevant specimens and modifications made to eliminate resolution-limiting conditions are also discussed.
ISSN:1431-9276
1435-8115
DOI:10.1017/S1431927606060570