Figure 6
Mössbauer spectrum of 57Fe in (Fe,Al)-Bdg.
Blue circles are raw data from which the backgrounds have been subtracted. The red and green lines indicate one doublet fitted to the data and fitting residuals. The isomer shift of 1.05 mm/s and the quadrupole splitting of 1.8 mm/s indicate that the sample contains high-spin Fe2+ in the magnesium site38,39.
