Fig. 4: Experimental measurement of the C-value in a FeBSi annealed at 900 °C analyzed at 50 K.
From: Introducing field evaporation energy loss spectroscopy
a Reconstructed volume: (green) Si in FeSi phase, (blue) B in FeB phase. The corresponding phase mass spectrum is plotted: (green) FeSi phase, (blue) FeB phase. b FEELS utilization on Fe2+ mass peak of the entire dataset: (red) FeLEL, (gray) FeHEL. (Black square) Visualization of the FeSi grain boundary by the FEELS method. The FeB phase and the grain boundary show a high energy loss of Fe. c FEELS representation of the FeSi grain boundary in yellow on colormap. The relative concentration of FeHEL atoms to FeLEL atoms in the mass spectrum is represented with a color scale. L is a low density and H is a high density. The grain boundary appears with a medium concentration in yellow. Blue dots represent B atoms in the Fe2B phase.
