An in-situ approach for preparing atom probe tomography specimens by xenon plasma-focused ion beam

Halpin, J.E., Webster, R.W.H., Gardner, H., Moody, M.P., Bagot, P.A.J. and MacLaren, D.A. (2019) An in-situ approach for preparing atom probe tomography specimens by xenon plasma-focused ion beam. Ultramicroscopy, 202, pp. 121-127. (doi:10.1016/j.ultramic.2019.04.005) (PMID:31005819)

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Abstract

A method for the rapid preparation of atom probe tomography (APT) needles using a xenon plasma-focused ion beam (FIB) instrument is presented and demonstrated on a test sample of Ti-6Al-4V alloy. The method requires significantly less operator input than the standard lift-out protocol, is site-specific and produces needles with minimal ion-beam damage; electron microscopy indicated the needle's surface amorphised/oxidised region to be less than 2 nm thick. The resulting needles were routinely analysable by APT, confirming the expected microstructure and showing negligible Xe contamination.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Halpin, Dr John and Webster, Mr Robert and MacLaren, Dr Donald
Authors: Halpin, J.E., Webster, R.W.H., Gardner, H., Moody, M.P., Bagot, P.A.J., and MacLaren, D.A.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Ultramicroscopy
Publisher:Elsevier
ISSN:0304-3991
ISSN (Online):0304-3991
Published Online:12 April 2019
Copyright Holders:Copyright © 2019 The Authors
First Published:First published in Ultramicroscopy 202:121-127
Publisher Policy:Reproduced under a Creative Commons license

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
722511A Focused Ion Beam Microscopy Facility for Advanced Materials AnalysisIan MaclarenEngineering and Physical Sciences Research Council (EPSRC)EP/P001483/1S&E P&A - PHYSICS & ASTRONOMY
707401Nanostructured half-Heuslers for thermoelectric waste heat recoveryDonald MaclarenEngineering and Physical Sciences Research Council (EPSRC)EP/N017218/1S&E P&A - PHYSICS & ASTRONOMY