Orientation and phase mapping in the transmission electron microscope using precession-assisted diffraction spot recognition: state-of-the-art results - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Microscopy Année : 2013

Orientation and phase mapping in the transmission electron microscope using precession-assisted diffraction spot recognition: state-of-the-art results

D. Viladot
  • Fonction : Auteur
M. Gemmi
  • Fonction : Auteur
F. Peiro
  • Fonction : Auteur
J. Portillo
  • Fonction : Auteur
S. Estrade
  • Fonction : Auteur
J. Mendoza
  • Fonction : Auteur
N. Llorca-Isern
  • Fonction : Auteur

Résumé

A recently developed technique based on the transmission electron microscope, which makes use of electron beam precession together with spot diffraction pattern recognition now offers the possibility to acquire reliable orientation/phase maps with a spatial resolution down to 2 nm on a field emission gun transmission electron microscope. The technique may be described as precession-assisted crystal orientation mapping in the transmission electron microscope, precession-assisted crystal orientation mapping technique-transmission electron microscope, also known by its product name, ASTAR, and consists in scanning the precessed electron beam in nanoprobe mode over the specimen area, thus producing a collection of precession electron diffraction spot patterns, to be thereafter indexed automatically through template matching. We present a review on several application examples relative to the characterization of microstructure/microtexture of nanocrystalline metals, ceramics, nanoparticles, minerals and organics. The strengths and limitations of the technique are also discussed using several application examples.

Domaines

Matériaux

Dates et versions

hal-00933902 , version 1 (21-01-2014)

Identifiants

Citer

D. Viladot, M. Veron, M. Gemmi, F. Peiro, J. Portillo, et al.. Orientation and phase mapping in the transmission electron microscope using precession-assisted diffraction spot recognition: state-of-the-art results. Journal of Microscopy, 2013, 252 (1), pp.23-34. ⟨10.1111/jmi.12065⟩. ⟨hal-00933902⟩
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