Personal Homepages

My interests are focused upon enabling materials research at the nanoscale via the microscopy techniques of atom probe tomography (APT) and field ion microscopy (FIM). APT is a technique capable of material characterisations at the atomic-scale, in which each atom is identified chemically and located in three-dimensions with very high accuracy. Hence, it is a technique rapidly rising in prominence. The FIM and Atom Probe Group in the Department of Materials at the University of Oxford are interested and active in all areas of this research across a broad range of material systems.

In particular, I am developing a variety of new analytical techniques to improve the three dimensional reconstructions generated by APT and the subsequent atom-by-atom analysis of the resulting data.  I am interested in applying these techniques to the characterisation of a wide variety of systems to inform materials research projects.

K.Y. Xie, A.J. Breen, L. Yao, M.P. Moody, B. Gault, J.M. Cairney, S.P. Ringer, Overcoming challenges in the study of nitrided microalloyed steels using atom probe, Ultramicroscopy, 112 (2012) 32-38.

F. Tang, D.S. Gianola, M.P. Moody, K.J. Hemker, J.M. Cairney, Observations of grain boundary impurities in nanocrystalline Al and their influence on microstructural stability and mechanical behaviour, Acta Materialia, 60 (2012) 1038-1047.

T. Homma, M. Moody, D. Saxey, S. Ringer, Effect of Sn Addition in Preprecipitation Stage in Al-Cu Alloys: A Correlative Transmission Electron Microscopy and Atom Probe Tomography Study, Metallurgical and Materials Transactions A, (2012) 1-11.

B. Gault, X.Y. Cui, M.P. Moody, F.d. Geuser, C. Sigli, S.P. Ringer, A. Deschamps, Atom probe microscopy investigation of Mg site occupancy within δ′ precipitates in an Al–Mg–Li alloy, Scripta Materialia, (2012).

V. Araullo-Peters, B. Gault, S.L. Shrestha, L. Yao, M.P. Moody, S.P. Ringer, J.M. Cairney, Atom probe crystallography: Atomic-scale 3-D orientation mapping, Scripta Materialia, (2012).

W.K. Yeoh, B. Gault, X.Y. Cui, C. Zhu, M.P. Moody, L. Li, R.K. Zheng, W.X. Li, X.L. Wang, S.X. Dou, G.L. Sun, C.T. Lin, S.P. Ringer, Direct Observation of Local Potassium Variation and Its Correlation to Electronic Inhomogeneity in (Ba1-xKx)Fe2As2 Pnictide, Physical Review Letters, 106 (2011) 247002.

L. Yao, M.P. Moody, J.M. Cairney, D. Haley, A.V. Ceguerra, C. Zhu, S.P. Ringer, Crystallographic structural analysis in atom probe microscopy via 3D Hough transformation, Ultramicroscopy, 111 (2011) 458-463.

K.L. Torres, B. Geiser, M.P. Moody, S.P. Ringer, G.B. Thompson, Field evaporation behavior in [0 0 1] FePt thin films, Ultramicroscopy, 111 (2011) 512-517.

L.T. Stephenson, M.P. Moody, S.P. Ringer, Theory of solute clustering in materials for atom probe, Philosophical Magazine, 91 (2011) 2200 - 2215.

L.T. Stephenson, M.P. Moody, B. Gault, S.P. Ringer, Estimating the physical cluster-size distribution within materials using atom-probe, Microscopy Research and Technique, 74 (2011) 799-803.

M.P. Moody, F. Tang, B. Gault, S.P. Ringer, J.M. Cairney, Atom probe crystallography: Characterization of grain boundary orientation relationships in nanocrystalline aluminium, Ultramicroscopy, 111 (2011) 493-499.

M.P. Moody, B. Gault, L.T. Stephenson, R.K.W. Marceau, R.C. Powles, A.V. Ceguerra, A.J. Breen, S.P. Ringer, Lattice Rectification in Atom Probe Tomography: Toward True Three-Dimensional Atomic Microscopy, Microscopy and Microanalysis, 17 (2011) 226-239.

B. Gault, S.T. Loi, V.J. Araullo-Peters, L.T. Stephenson, M.P. Moody, S.L. Shrestha, R.K.W. Marceau, L. Yao, J.M. Cairney, S.P. Ringer, Dynamic reconstruction for atom probe tomography, Ultramicroscopy, 111 (2011) 1619-1624.

B. Gault, D. Haley, F. de Geuser, M.P. Moody, E.A. Marquis, D.J. Larson, B.P. Geiser, Advances in the reconstruction of atom probe tomography data, Ultramicroscopy, 111 (2011) 448-457.

B. Gault, Y.M. Chen, M.P. Moody, T. Ohkubo, K. Hono, S.P. Ringer, Influence of the wavelength on the spatial resolution of pulsed-laser atom probe, J. Appl. Phys., 110 (2011) 094901-094905.

F. Tang, T. Alam, M.P. Moody, B. Gault, J.M. Cairney, Challenges Associated with the Characterisation of Nanocrystalline Materials using Atom Probe Tomography, in: J.F. Nie, A. Morton (Eds.) Pricm 7, Pts 1-3, Trans Tech Publications Ltd, Stafa-Zurich, 2010, pp. 2366-2369.

B. Gault, M. Muller, A.L. Fontaine, M.P. Moody, A. Shariq, A. Cerezo, S.P. Ringer, G.D.W. Smith, Influence of surface migration on the spatial resolution of pulsed laser atom probe tomography, J. Appl. Phys., 108 (2010) 044904.

B. Gault, M.P. Moody, F. De Geuser, A. La Fontaine, L.T. Stephenson, D. Haley, S.P. Ringer, Spatial Resolution in Atom Probe Tomography, Microscopy and Microanalysis, 16 (2010) 99-110.

B. Gault, A. La Fontaine, M.P. Moody, S.P. Ringer, E.A. Marquis, Impact of laser pulsing on the reconstruction in an atom probe tomography, Ultramicroscopy, 110 (2010) 1215-1222.

A.V. Ceguerra, R.C. Powles, M.P. Moody, S.P. Ringer, Quantitative description of atomic architecture in solid solutions: A generalized theory for multicomponent short-range order, Physical Review B, 82 (2010) 132201.

A.V. Ceguerra, M.P. Moody, L.T. Stephenson, R.K.W. Marceau, S.P. Ringer, A three-dimensional Markov field approach for the analysis of atomic clustering in atom probe data, Philosophical Magazine, 90 (2010) 1657 - 1683.

R.K. Zheng, M.P. Moody, B. Gault, Z.W. Liu, H. Liu, S.P. Ringer, On the understanding of the microscopic origin of the properties of diluted magnetic semiconductors by atom probe tomography, Journal of Magnetism and Magnetic Materials, 321 (2009) 935-943.

M.P. Moody, B. Gault, L.T. Stephenson, D. Haley, S.P. Ringer, Qualification of the tomographic reconstruction in atom probe by advanced spatial distribution map techniques, Ultramicroscopy, 109 (2009) 815-824.

B. Gault, M.P. Moody, F. de Geuser, G. Tsafnat, A. La Fontaine, L.T. Stephenson, D. Haley, S.P. Ringer, Advances in the calibration of atom probe tomographic reconstruction - art. no. 034913, J. Appl. Phys., 105 (2009) 34913-34913.

B. Gault, M.P. Moody, F. de Geuser, D. Haley, L.T. Stephenson, S.P. Ringer, Origin of the spatial resolution in atom probe microscopy, Appl. Phys. Lett., 95 (2009) 1-3.

S.K. Seal, K. Rajan, S. Aluru, M.P. Moody, A.V. Ceguerra, S.P. Ringer, Tracking Nanostructural Evolution in Alloys: Large-scale Analysis of Atom Probe Tomography Data on Blue Gene/L, in: The 37th International Conference On Parallel Processing (ICPP-08), Portland, Oregon, USA 2008.

M.P. Moody, L.T. Stephenson, A.V. Ceguerra, S.P. Ringer, Quantitative binomial distribution analyses of nanoscale like-solute atom clustering and segregation in atom probe tomography data, Microscopy Research and Technique, 71 (2008) 542-550.

B. Gault, M.P. Moody, D.W. Saxey, J.M. Cairney, Z. Liu, R. Zheng, R.K.W. Marceau, P.V. Liddicoat, L.T. Stephenson, S.P. Ringer, Atom Probe Tomography at The University of Sydney, in:  Advances in Materials Research - Frontiers in Materials Research, Springer, Berlin Heidelberg, 2008, pp. 187-216.

B. Gault, F. de Geuser, L.T. Stephenson, M.P. Moody, B.C. Muddle, S.P. Ringer, Estimation of the reconstruction parameters for atom probe tomography, Microscopy and Microanalysis, 14 (2008) 296-305.

L.T. Stephenson, M.P. Moody, P.V. Liddicoat, S.P. Ringer, New techniques for the analysis of fine-scaled clustering phenomena within atom probe tomography (APT) data, Microscopy and Microanalysis, 13 (2007) 448-463.

M.P. Moody, L.T. Stephenson, P.V. Liddicoat, S.P. Ringer, Contingency table techniques for three dimensional atom probe tomography, Microscopy Research and Technique, 70 (2007) 258-268.

M.F. Herman, M.P. Moody, Numerical study of the accuracy and efficiency of various approaches for Monte Carlo surface hopping calculations - art. no. 094104, Journal of Chemical Physics, 122 (2005) 94104-94104.

M.P. Moody, P. Attard, Monte Carlo simulation methodology of the ghost interface theory for the planar surface tension, Journal of Chemical Physics, 120 (2004) 1892-1904.

M.F. Herman, O. El Akramine, M.P. Moody, Globally uniform semiclassical surface-hopping wave function for nonadiabatic scattering, Journal of Chemical Physics, 120 (2004) 7383-7390.

M.P. Moody, F. Ding, M.F. Herman, Phase corrected higher-order expression for surface hopping transition amplitudes in nonadiabatic scattering problems, Journal of Chemical Physics, 119 (2003) 11048-11057.

M.P. Moody, P. Attard, Curvature-dependent surface tension of a growing droplet - art. no. 056104, Physical Review Letters, 9105 (2003) 6104-6104.

M.P. Moody, P. Attard, Homogeneous nucleation of droplets from a supersaturated vapor phase, Journal of Chemical Physics, 117 (2002) 6705-6714.

P. Attard, M.P. Moody, J.W.G. Tyrrell, Nanobubbles: the big picture, Physica A-Statistical Mechanics and Its Applications, 314 (2002) 696-705.

M.P. Moody, P. Attard, Curvature dependent surface tension from a simulation of a cavity in a Lennard-Jones liquid close to coexistence, Journal of Chemical Physics, 115 (2001) 8967-8977.

 

A new approach for 3D Field Ion Microscopy
M. P. Moody

It is an exciting period for field ion microscopy (FIM) and atom probe tomography (APT) research. APT has risen to prominence recently because of its capacity to generate large 3D atomistic images of a specimen, in which the chemical identity of every atom is characterised with very high accuracy. However, limitations remain which are now encouraging some researchers to revisit its predecessor, field ion microscopy. FIM provides a highly resolved 2D image of the surface of the specimen with limited contrast between different types of atoms, depending on the analysed system. Significantly, unlike APT, FIM can image individual sites on the atomic lattice, and hence can identify the presence of vacant sites, dislocations and radiation induced damage to the crystal. The goal of this project is to extend these capabilities into three dimensions and to develop a new tomographic approach for 3D FIM. The student will undertake both FIM and complementary APT experiments on a range of materials, including: semiconductors, pure metals and steels. A key focus of the work will be the development and optimization of a tomographic reconstruction protocol to generate accurate 3D FIM images, and further to adapt analysis tools to characterise the nature of the data. Any questions concerning the project can be addressed to Dr Michael Moody (michael.moody@materials.ox.ac.uk).

Also see homepages: Michael Moody

Also see a full listing of New projects available within the Department of Materials.