Introducing field evaporation energy loss spectroscopy

Loïc Rousseau (1) , Antoine Normand (2) , Felipe Morgado (3) , Hanne-Sofie Marie Scisly Søreide (4) , Leigh Stephenson (3) , Constantinos Hatzoglou (4) , Gérald da Costa (1) , Kambiz Tehrani (5) , Christoph Freysoldt (3) , Baptiste Gault (3, 6) , François Vurpillot (1)

1 GPM - Groupe de physique des matériaux
2 UNIROUEN - Université de Rouen Normandie
3 Max-Planck-Institut für Eisenforschung GmbH
4 IMA NTNU - Department of Materials Science and Engineering [Trondheim]
5 ESIGELEC - École Supérieure d’Ingénieurs en Génie Électrique
6 Imperial College London

Abstract Retrieving information on the chemical and bonding states of atoms in a material in three-dimensions is challenging even for the most advanced imaging techniques. Here, we demonstrate that this information is accessible via straight-flight-path atom probe tomography experimental data, however it requires additional processing. Using an activation energy model that involves linear field dependance, and complementing it with DFT simulations, we extract the ion energy loss related to the kinetics of the field evaporation process from the mass peak shape. In turn, we reconstruct how evaporated atoms were originally bound to the surface. We name our data processing approach evaporation energy loss spectroscopy (FEELS), and showcase its application by analyzing microstructural features and defects in an array of metallic materials. Finally, we discuss the general applicability of FEELS to any atom probe data set.

Domaines: Sciences de l'ingénieur [physics]

Loïc Rousseau, Antoine Normand, Felipe Morgado, Hanne-Sofie Marie Scisly Søreide, Leigh Stephenson, et al.. Introducing field evaporation energy loss spectroscopy. Communications Physics, 2023, 6 (1), pp.100. ⟨10.1038/s42005-023-01203-2⟩. ⟨hal-04106937⟩