Cameca LEAP 5000 HR


Materials Science, Geological Sciences, Devices, Defect & Failure Analysis

  • Atom by atom reconstruction of materials: 3D chemical analysis at the nanometer scale
  • Phase transformations
  • Semiconductor analysis: Dopants, quantum structures


Allen Hunter


Room G017


Publications, presentations, and posters resulting from work on this instrument should state: “The authors acknowledge the financial support of the University of Michigan College of Engineering and technical support from the Michigan Center for Materials Characterization.


  • Voltage pulsing
    • Frequency: Up to 250 kHz
    • Pulse fraction: <25%
  • Laser pulsing
    • Wavelength: 355 nm
    • Frequency: 50 to 500 kHz
    • Spot size < 3 μm
  • Specimen temperature: 20-100 K
  • Detection efficiency (reflectron configuration): ~52%

Useful Links


  1. Enhanced Work Hardening from Oxygen-Stabilized ω Precipitates in an Aged Metastable β Ti-Nb Alloy, K. Chou, N. Li, E.A. Marquis, Acta Materialia, 220, 117302, 2021
  2. Precipitation in Proton- and Ion-Irradiated Alloy 625 Plus, L-J. Yu, E.A. Marquis, Journal of Nuclear Materials, 153040, 2021 
  3. Effects of Minor Alloying Elements on Alumina Transformation During the Transient Oxidation of β-NiAl, T.L. Barth, E.A. Marquis, Oxidation of Metals, 95, 293-309, 2021
  4. Distribution of Transition Metal Elements in an Al-Si-Cu-Based Alloy, Q. Shi, Y. Huo, T. Berman, B. Ghaffri, M. Lei, J. Allison, Scripta Materialia, 190, 97-102, 2021
  5. Atom Probe Tomography Characterization of Ion and Neutron Irradiated Alloy 800H, T. Liu, E.R. Reese, I. Ghamarian, E.A. Marquis, Journal of Nuclear Materials, 543, 152598, 2020
  6. Microstructural Characterization of Cold-Worked 316 Stainless Steel Flux Thimble Tubes Irradiated up to 100 dpa in a Commercial Pressurized Water Reactor, M. Song, K.G. Field, R.M. Cox, G.S. Was, Journal of Nuclear Materials, 541, 152400, 2020
  7. The Effect of III: V Ratio on Compositional and Microstructural Properties of GaAs1-xBix (001), B.A. Carter, V. Caro, L. Yue, C.R. Tait, J.M. Millunchick, Journal of Crystal Growth, 548, 125815, 2020
  8. Alloy Amorphization through Nanoscale Shear Localization at Al-Fe Interface, F.C. Liu, P. Dong, J. Zhang, W. Lu, A. Taub, K. Sun, Materials Today Physics, 15, 100252, 2020
  9. Influence of Quantum Dot Morphology on the Optical Properties of GaSb/GaAs Multilayers, C. Greenhill, A.S. Chang, E.S. Zech, S. Clark, G. Balakrishnan, R.S. Goldman, Applied Physics Letters, 116, 252107, 2020
  10. Microstructural Responses of Alloy 625 and Alloy 625 Plus Under Ion and Proton Irradiations, L-J. Yu, E.A. Marquis, JOM, 72, 8, 2020
  11. Mechanisms of Ti and B on Improving Weld Metal Toughness of a Nb-Alloyed Steel, X. Liu, Q. Shi, M. Xu, J. Kang, S. Webb, Materials Science & Engineering A, 788, 139535, 2020
  12. Quantification of Solute Topology in Atom Probe Tomography Data: Application to the Microstructure of a Proton-Irradiated Alloy 625, I. Ghamarian, L-J. Yu, E.A. Marquis, Metallurgical and Materials Transactions A, 1-9, 2019
  13. Oxygen effects on ω and α phase transformations in a metastable β Ti-Nb alloy, K. Chou, E.A. Marquis, Acta Materialia, 181, 367-376, 2019
  14. Insights into the Sources of Irradiation Hardening in a Neutron Irradiated 304L Stainless Steel Following Post-Irradiation Annealing, Z. Jiao, J. Hesterberg, G.S. Was, Journal of Nuclear Materials, 526, 151754, 2019 
  15. Precipitation Behavior of Alloy 625 and Alloy 625 Plus, L-J. Yu, E.A. Marquis, Journal of Alloys and Compounds, 811, 151916, 2019
  16. Micro- and Nano-Scale Intermetallic Phases in AA2070-T8 and their Corrosion Behavior, Y. Zhu, K. Sun, J. Garves, L.G. Bland, J. Locke, J. Allison, G.S. Frankel, Electrochimica Acta, 319, 634-648, 2019 
  17. Microstructure Response of Ferritic/Martensitic Steel HT9 After Neutron Irradiation, C. Zheng, E.R. Reese, K.G. Field, E.A. Marquis, S.A. Maloy, D. Kaoumi, Journal of Nuclear Materials, 523, 421-433, 2019
  18. Analysis of Niobium-Rich Phases in the Submerged Arc Welds of High Strength Low Alloy Steel, X. Liu, M. Xu, Q. Shi, J. Kang, J. Procario, W. Hou, M. Manohar, Materialia, 7, 100340, 2019
  19. Influence of Surface Relaxation on Solute Atoms Positioning within Atom Probe Tomography Reconstructions, C. Oberdorfer, T. Withrow, L.-J. Yu, K. Fisher, E.A. Marquis, W. Windl, Materials Characterization, 146, 324-335, 2018
  20. Role of Structural Hydroxyl Groups in Enhancing Performance of Electrochemically-Synthesized Bilayer V2O5, S. Tepavcevic, J.G. Connell, P.P. Lopes, M. Bachhav, B. Key, C. Valero-Vidal, E.J. Crumlin, V.R. Stamenkovic, N.M. Markovic, Nano Energy, 53, 449-457, 2018
  21. Effect of Post-Irradiation Annealing on the Irradiated Microstructure of Neutron-Irradiated 304L Stainless Steel, Z. Jiao, J. Hesterberg, G.S. Was, Journal of Nuclear Materials, 500, 220-234, 2018
  22. Early Oxidation Behavior of Si-Coated Titanium, K. Chou, P. Chu, E.A. Marquis, Corrosion Science, 140, 297-306, 2018
  23. Sensitization and Stress Corrosion Crack Response of Dual Certified Type 304/304L Stainless Steel, K.B. Fisher, B.D. Miller, R. Hermer, C. Brown, E.A. Marquis, Corrosion, 74(7), 737-746, 2018
  24. Radiation Tolerance of Commercial and Advanced Alloys for Core Internals: A Comprehensive Microstructural Characterization, M. Song, C.R. Lear, C.M. Parish, M. Wang, G.S. Was, Journal of Nuclear Materials, 510, 396-413, 2018
  25. Evolution of Local Lattice Distortion under Irradiation in Medium- and High-Entropy Alloys, Y. Tong, G. Velisa, S. Zhao, W. Guo, T. Yang, K. Jin, C. Lu, H. Bei, J.Y.P. Ko, D.C. Pagan, Y. Zhang, L. Wang, F.X. Wang, Materialia, 2, 73-81, 2018
  26. The Role of Surface Deformation in the Oxidation Response of Type 304 SS in High Temperature Deaerated Water, K.B. Fisher, B.D. Miller, E.C. Johns, E.A. Marquis, Corrosion Science, 141, 88-96, 2018
  27. Probing Long-Range Ordering in Nickel-Base Alloys with Proton Irradiation, M. Song, Y. Yang, M. Wang, W. Kuang, C.R. Lear, G.S. Was, Acta Materialia, 156, 446-462, 2018
  28. On α’ Composition in Thermally Annealed and Neutron-Irradiated Fe- 9-18Cr Alloys, E.R. Reese, M. Bachhav, P. Wells, T. Yamamoto, G.R. Odette, E.A. Marquis, Journal of Nuclear Materials, 2018
  29. Dose Rate Dependence of Cr Precipitation in an Ion-Irradiated Fe-18Cr Alloy, E.R. Reese, N. Almirall, T. Yamamoto, S. Tumey, G.R. Odette, E.A. Marquis, Scripta Materialia, 146 213–217, 2018
  30. Microstructure of Localized Corrosion Front on Mg Alloys and the Relationship with Hydrogen Evolution, P. Chu, E. Le Mire, E.A. Marquis, Corrosion Science, 128, 253-264, 2017
  31. On the Use of Density-Based Algorithms for the Analysis of Solute Clustering in Atom Probe Tomography Data, E.A. Marquis, V. Araullo-Peters, Y. Dong, A. Etienne, S. Fedotova, K. Fujii, K. Fukuya, E. Kuleshova, A. Lopez, A. London, S. Lozano-Perez, Y. Nagai, K. Nishida, B. Radiguet, D. Schreiber, N. Soneda, M. Thuvander, T. Toyama, F. Sefta, P. Chou, 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors, August 13-17, 2017, Portland, Oregon
  32. The Effect of Ni:Co Ratio on the Elemental Phase Partitioning in γ-γ′ Ni-Co-Al-Ti-Cr Alloys, S.C.H. Llewelyn, K.A. Christofidou, V.J. Araullo-Peters, N.G. Jones, M.C. Hardy, E.A. Marquis, H.J. Stone, Acta Materialia, 131 296-304, 2017
  33. Early Precipitate Morphologies in Mg-Nd-(Zr) Alloys, E.L.S. Solomon, V. Araullo-Peters, J.E. Allison, E.A. Marquis, Scripta Materialia, 128, 14-17, 2017
  34. Structural Differences between Capped GaSb Nanostructures Grown by Stranski-Krastanov and Droplet Epitaxy Growth Modes, M. DeJarld, L. Yan, M. Luengo-Kovac, V. Sih, J.M. Millunchick, Journal of Applied Physics, 121(3), 34301, 2017
  35. Droplet Induced Compositional Inhomogeneities in GaAsBi, C.R. Tait, L. Yan, J.M. Millunchick, Applied Physics Letters, 111(4), 42105, 2017
  36. High Performance Red-Emitting Multiple Layer InGaN/GaN Quantum Dot Lasers, T. Frost, A. Hazari, A. Aiello, M.Z. Baten, L. Yan, J.M. Millunchick, P. Bhattacharya, Japanese Journal of Applied Physics, 55(3), 32101, 2016
  37. Three Dimensional Imaging of Shear Bands in Bulk Metallic Glass Composites, A.H. Hunter, M. Gibbons, V. Araullo-Peters, O.D. Restrepo, S.R. Niezgoda, W. Windl, K.M. Flores, D.C. Hofmann, E.A. Marquis,  Journal of Microscopy, 264(3):304-310, 2016
  38. Towards an Understanding of Tensile Deformation in Ti-Based Bulk Metallic Glass Matrix Composites with BCC Dendrites, J. Kolodziejska, H. Kozachkov, K. Kranjc, A.H. Hunter, E.A. Marquis, K. Flores, W. Johnson, and D. Hofmann, Scientific Reports, 6, 22563, 2016
  39. Microstructure of HIPed and SPSed 9Cr-ODS Steel and its Effect on Helium Bubble Formation, C. Lu, Z. Lu, R. Xie, C. Liu, L. Wang, Journal of Nuclear Materials, 474, 65-75, 2016
  40. Effects of the Local Structure Dependence of Evaporation Fields on Field Evaporation Behavior, L. Yao, T. Withrow, O. Restrepo, W. Windl, E.A. Marquis, Applied Physics Letters, 107, 241602, 2015
  41. Atom Probe Tomography Applied to the Analysis of Irradiated Microstructures, E.A. Marquis, Journal of Materials Research, 30(9), 2015
  42. Microchemical and Microstructural Evolution of AISI 304 Stainless Steel Irradiated in EBR-II at PWR-Relevant DPA Rates, Y. Dong, B.H. Sencer, F. Garner, E.A. Marquis, Journal of Nuclear Materials, 467, 692-702, 2015
  43. EELS and Atom Probe Tomography Study of the Evolution of the Metal/Oxide Interface during Zirconium Alloy Oxidation, B. de Gabory, Y. Dong, A. Motta, E.A. Marquis, Journal of Nuclear Materials, 462, 304-309, 2015
  44. Interfacial Solute Segregation in the Thermally Grown Oxide of Thermal Barrier Coating Structures, Y. Chen, R.C. Reed, E.A. Marquis, Oxidation of Metals, 82(5-6), 457-467, 2014
  45. Microstructural Changes in a Neutron-Irradiated Fe-15at.%Cr Alloy, M. Bachhav, G.R. Odette, E.A. Marquis, Journal of Nuclear Materials, 454(1-3), 381-386, 2014
  46. Radiation-Induced Ostwald Ripening in Oxide Dispersion Strengthened Ferritic Steels Irradiated at High Ion Dose, J. Ribis, M.L. Lescoat, Y. Chen, E.A. Marquis, S. Menut, J.L. Bechade, S. Schlutig, B. Sitaud, Y. Serruys, P. Trocellier, Y. De Carlan, A. Legris, Acta Materialia, 78(1), 328-340, 2014
  47. Quantitative Atom Probe Tomography Characterization of Microstructures in a Proton Irradiated 304 Steel, Y. Chen, P. Chou, E.A. Marquis, Journal of Nuclear Materials, 451, 130-136, 2014
  48. Alpha’ Precipitation in Neutron-Irradiated Fe-Cr Alloys, M. Bachhav, G.R. Odette, E.A. Marquis, Scripta Materialia, 74, 48-51, 2014
  49. On the Current Role of Atom Probe Tomography in Materials Characterization and Materials Science, E.A. Marquis, M. Bachhav, Y. Chen, Y. Dong, L. Gordon, A. McFarland, Current Opinions in Solid State and Materials Science, 17, 217-223, 2013
  50. Atom Probe Tomography Analysis of Different Modes of Sb Intermixing in GaSb Quantum Dots and Wells, A.J. Martin, A.H. Hunter, T.W. Saucer, V. Sih, E.A. Marquis, J.M. Millunchick, Applied Physics Letters, 103, 122102, 2013
  51. The Disintegration of GaSb/GaAs Nanostructures upon Capping, A.J. Martin, J. Hwang, E.A. Marquis, E. Smakman, T.W. Saucer, G.V. Rodriguez, A.H. Hunter, V. Sih, P.M. Koenraad, J.D. Philips, J.M. Millunchick, Applied Physics Letters, 102(11) 113103, 2013
  52. Atom Probe Tomography Study of Alloying Element Distributions in Zr Alloys and their Oxides, Y. Dong, A. Motta, E.A. Marquis, Journal of Nuclear Materials, 442(1-3) 270-281, 2013
  53. Lattice Misfit during Ageing of a Polycrystalline Nickel-Base Superalloy, D.M. Collins, L. Yan, E.A. Marquis, L.D. Connor, J.J. Ciardiello, A.D. Evans, H.J. Stone, Acta Materialia,  61(20), 7791-7804, 2013
  54. Interfacial Morphology Development and Solute Trapping Behavior during Rapid Solidification of an Al–Li–Cu Alloy, D.W. Heard, J. Boselli, R. Rioja, E.A. Marquis, R. Gauvin, M. Brochu, Acta Materialia, 61(5), 1571-1580, 2013
  55. As-Coated Thermal Barrier Coating: Structure and Chemistry, Y. Chen, R.C. Reed, E.A. Marquis, Scripta Materialia, 67(9), 779-782, 2012