Fig. 8: Monochromated EELS data at the nitrogen K-edge compared with STXM data.

The main absorption bands discussed in the text are indicated. Note: the spectrum for FIBW-06 was acquired with a poorer energy resolution of 0.3 eV than all other N-K EELS data presented. It is included here for completeness and comparison with all acquired STXM data. See text for details.