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. Protective role of silicon in the high-temperature oxidation of titanium, T.C. Valenza, P. Chao, P.K. Weber, O.K. Neill, E.A. Marquis, Corrosion Science, 217, 111110, 2023
  2. Geometric defects induced by strain relaxation in thin film oxide superlattices, M. Webb, T. Ma, A.H. Hunter, S. McSherry, J. Kaufman, Z. Deng, W.B. Carter, E. Kioupakis, K. Esfarjani, A. Lenert, J.T. Heron, Journal of Applied Physics, 132(185307), 2022
  3. 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
  4. Precipitation in Proton- and Ion-Irradiated Alloy 625 Plus, L-J. Yu, E.A. Marquis, Journal of Nuclear Materials, 153040, 2021 
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. Microstructural Responses of Alloy 625 and Alloy 625 Plus Under Ion and Proton Irradiations, L-J. Yu, E.A. Marquis, JOM, 72, 8, 2020
  13. 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
  14. 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
  15. 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
  16. 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 
  17. Precipitation Behavior of Alloy 625 and Alloy 625 Plus, L-J. Yu, E.A. Marquis, Journal of Alloys and Compounds, 811, 151916, 2019
  18. 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 
  19. 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
  20. 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
  21. 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
  22. 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
  23. 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
  24. Early Oxidation Behavior of Si-Coated Titanium, K. Chou, P. Chu, E.A. Marquis, Corrosion Science, 140, 297-306, 2018
  25. 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
  26. 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
  27. 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
  28. 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
  29. 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
  30. 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
  31. 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