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Atom Probe Tomography Analysis of Exsolved Mineral Phases

Atom Probe Tomography Analysis of Exsolved Mineral Phases

Published on: October 25, 2019

Spatial resolution in atom probe tomography.

Baptiste Gault¹, Michael P Moody, Frederic De Geuser

¹Australian Key Centre for Microscopy & Microanalysis, The University of Sydney, NSW 2006, Australia. baptiste.gault@materials.ox.ac.uk

Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada

|January 20, 2010

Summary

This summary is machine-generated.

This study introduces a new method to quantify spatial resolution in atom probe tomography (APT). The findings reveal that resolution is specimen-specific and influenced by crystallography and temperature.

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Atom Probe Tomography Analysis of Exsolved Mineral Phases

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

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Area of Science:

Materials Science
Nanotechnology
Analytical Chemistry

Background:

Atom probe tomography (APT) is a powerful technique for 3D atomic-scale characterization.
Current methods for assessing APT spatial resolution lack standardization and clear definitions.
Anisotropic spatial resolution (better in-depth than lateral) is a known characteristic of APT.

Purpose of the Study:

To address the lack of standard measurement techniques for APT spatial resolution.
To develop a methodology for quantifying both in-depth and lateral spatial resolution.
To investigate the influence of crystallography and temperature on APT spatial resolution.

Main Methods:

Development of an analysis methodology based on advanced spatial distribution maps.
Interrogation of the local atomic neighborhood within the tomographic reconstruction.
Investigation of specimen-specific resolution under varying crystallographic and temperature conditions.

Main Results:

A quantitative method for assessing in-depth and lateral spatial resolution in APT was established.
The study demonstrated that spatial resolution is anisotropic, with superior in-depth performance.
Crystallography and temperature were identified as key factors influencing spatial resolution.

Conclusions:

The proposed methodology provides a robust way to quantify APT spatial resolution.
Understanding specimen-specific resolution is crucial for accurate interpretation of APT data.
This work contributes to standardizing APT analysis and improving data reliability.