Early results from an aberration-corrected JEOL 2200FS STEM/TEM at Oak Ridge National Laboratory

Douglas A. Blom, Lawrence F. Allard, Satoshi Mishina, Michael A. O'Keefe

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)483-491
Number of pages9
JournalMicroscopy and Microanalysis
Volume12
Issue number6
DOIs
StatePublished - Dec 2006

Keywords

  • Aberration-corrected scanning transmission electron microscopy
  • Atomic resolution
  • High-angle annular dark-field imaging
  • Single atom imaging

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