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Related Experiment Video

Updated: Jun 3, 2026

Atom Probe Tomography Studies on the Cu(In,Ga)Se2 Grain Boundaries
09:51

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Published on: April 22, 2013

Lattice rectification in atom probe tomography: toward true three-dimensional atomic microscopy.

Michael P Moody1, Baptiste Gault, Leigh T Stephenson

  • 1Australian Centre for Microscopy and Microanalysis, The University of Sydney, NSW 2006, Australia. michael.moody@sydney.edu.au

Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada
|March 9, 2011
PubMed
Summary
This summary is machine-generated.

A new lattice rectification technique precisely locates atoms in 3D atom probe tomography (APT) data. This method reveals detailed solute clustering and hierarchy in alloys, advancing materials science and atomic-scale analysis.

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Area of Science:

  • Materials Science
  • Analytical Chemistry
  • Solid-State Physics

Background:

  • Atom probe tomography (APT) provides atomic resolution imaging with 3D positional and chemical information.
  • Accurate determination of atomic positions within crystal lattices is crucial for understanding material properties.
  • Existing APT data processing methods often involve averaging, potentially obscuring fine-scale structural details.

Purpose of the Study:

  • To present a novel lattice rectification technique for raw APT data.
  • To enable the restoration of lattice-specific atomic configurations from APT reconstructions.
  • To enhance the analysis of solute behavior and atomic clustering in alloys.

Main Methods:

  • Development and application of a lattice rectification technique using triangulation of individual atoms.
  • Analysis of a pure tungsten (W) sample to validate the technique.
  • Application to a multicomponent aluminum (Al) alloy (Al-1.1Cu-1.7Mg at. %) to study solute clustering.

Main Results:

  • The lattice rectification technique accurately places atoms in their true lattice sites without averaging.
  • Unprecedented detail on solute hierarchy and distribution within the solid solution was achieved.
  • Lattice-site and species-specific radial distribution functions and short-range order parameters were calculated.
  • Sensitive characterization of solute clustering, linked to rapid hardening in the Al-Cu-Mg alloy, was demonstrated.

Conclusions:

  • Lattice rectification of APT data significantly enhances the precision and detail of atomic-scale material characterization.
  • The technique provides critical insights into solute-clustering phenomena influencing alloy properties.
  • This method offers a powerful new tool for fundamental materials research and alloy development.