DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Understanding atom probe’s analytical performance for iron oxides using correlation histograms and ab initio calculations

Journal Article · · New Journal of Physics

Abstract Field evaporation from ionic or covalently bonded materials often leads to the emission of molecular ions. The metastability of these molecular ions, particularly under the influence of the intense electrostatic field (10 10 Vm −1 ), makes them prone to dissociation with or without an exchange of energy amongst them. These processes can affect the analytical performance of atom probe tomography (APT). For instance, neutral molecules formed through dissociation may not be detected at all or with a time of flight no longer related to their mass, causing their loss from the analysis. Here, we evaluated the changes in the measured composition of FeO, Fe 2 O 3 and Fe 3 O 4 across a wide range of analysis conditions. Possible dissociation reactions are predicted by density-functional theory calculations considering the spin states of the molecules. The energetically favoured reactions are traced on to the multi-hit ion correlation histograms, to confirm their existence within experiments, using an automated Python-based routine. The detected reactions are carefully analyzed to reflect upon the influence of these neutrals from dissociation reactions on the performance of APT for analysing iron oxides.

Sponsoring Organization:
USDOE
OSTI ID:
2323975
Alternate ID(s):
OSTI ID: 2319063; OSTI ID: 2429501
Journal Information:
New Journal of Physics, Journal Name: New Journal of Physics Journal Issue: 3 Vol. 26; ISSN 1367-2630
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (39)

Mass spectrometric analysis of low temperature field evaporation journal May 1968
Characterising the performance of an ultrawide field-of-view 3D atom probe journal November 2023
Facilitating the Systematic Nanoscale Study of Battery Materials by Atom Probe Tomography through in‐situ Metal Coating journal December 2023
journal
Correlated ion analysis and the interpretation of atom probe mass spectra journal May 2011
Behavior of molecules and molecular ions near a field emitter journal March 2016
Performance of local electrodes in the local electrode atom probe journal September 2007
Metrology of small particles and solute clusters by atom probe tomography journal April 2020
Atom probe tomography journal July 2021
Do Dielectric Nanostructures Turn Metallic in High-Electric dc Fields? journal October 2014
Some aspects of atom-probe analysis of FeC and FeN systems journal April 1992
Measurement of the barrier height of the reflective W {110} plane boundaries in surface diffusion of single atoms journal September 1982
On field-evaporation end forms of a bcc metal surface observed by a field ion microscope journal October 1969
Isotopic Correction of Compositional Inaccuracies in the Atom Probe Analysis of LaB6 journal February 2024
Advances in Pulsed-Laser Atom Probe: Instrument and Specimen Design for Optimum Performance journal November 2007
Electronic structure and stability of the SiO2+ dications produced in tomographic atom probe experiments journal October 2017
Absolute and angular efficiencies of a microchannel‐plate position‐sensitive detector journal November 1984
Correlating laser energy with compositional and atomic-level information of oxides in atom probe tomography journal September 2023
Sustainable steel through hydrogen plasma reduction of iron ore: Process, kinetics, microstructure, chemistry journal July 2021
Simulation of field-induced molecular dissociation in atom-probe tomography: Identification of a neutral emission channel journal June 2017
On the detection of multiple events in atom probe tomography journal June 2018
Investigation of O-18 enriched hematite (α-Fe2O3) by laser assisted atom probe tomography journal February 2013
Influence of microstructure and atomic-scale chemistry on the direct reduction of iron ore with hydrogen at 700°C journal June 2021
In situ site-specific specimen preparation for atom probe tomography journal February 2007
Software update: The ORCA program system—Version 5.0 journal March 2022
Three-Dimensional Atomically Resolved Analytical Imaging with a Field Ion Microscope journal August 2022
Optimization of pulsed laser atom probe (PLAP) for the analysis of nanocomposite Ti–Si–N films journal June 2010
The Fate of Water in Hydrogen‐Based Iron Oxide Reduction journal June 2023
Laser-equipped gas reaction chamber for probing environmentally sensitive materials at near atomic scale journal February 2022
Density functional theory study on the geometric and electronic structures of Fe2O2 and the reaction of Fe2 + O2 journal April 2018
Hough Transform Based Accurate Composition Extractions From Correlation Histograms in Atom Probe Tomography journal August 2019
Hierarchical nature of hydrogen-based direct reduction of iron oxides journal May 2022
Investigation of wüstite (Fe1−xO) by femtosecond laser assisted atom probe tomography journal May 2011
Field evaporation theory: a review of basic ideas journal March 1995
Dynamic reconstruction for atom probe tomography journal November 2011
Investigations of field-evaporated end forms in voltage- and laser-pulsed atom probe tomography journal April 2009
Interpreting atom probe data from chromium oxide scales journal December 2015
Reducing Iron Oxide with Ammonia: A Sustainable Path to Green Steel journal March 2023
Impact of laser pulsing on the reconstruction in an atom probe tomography journal August 2010