Fig. 3: Experimental measurement of the C-value in a Σ3 Al[110](111) analyzed at 60 K.
From: Introducing field evaporation energy loss spectroscopy

a Reconstructed volume. The grain boundary presents a low density of atoms and a curvy atomic arrangement may be due to rolling-up effects. b Al+ mass peaks associated with the two selected volumes inside the volume: (blue) in the grain boundary, (red) in the crystal. c Al+ mass peak from the volume. (red) AlLEL atoms with low energy loss (LEL) (gray) AlHEL atoms from the tail, with high energy loss (HEL). d FEELS representation of the grain boundary after applying a plane projection of the AlHEL/AlLEL composition map to increase visibility. L and H on the color bar represent respectively FeLEL and FeHEL.