Mn L edge spectra for different Mn oxides. Mn 3+ and Mn 2+ formal valence states each show a sharp peak at the edge onset, with the 2+ peak about 2 eV below the 3+. (The effect is much less pronounced for 3+ vs 4+)
By: Yao Yang
Microscope: Nion UltraSTEM (100 keV)
Energy Resolution: 0.5 eV
Note: The energy axis of the Mn edge has been calibrated using dual EELS map.
By: Yao Yang
Microscope: Nion UltraSTEM (100 keV)
Energy Resolution: 0.5 eV
Note: The energy axis of the Mn edge has been calibrated using dual EELS map.
Ref: Yang, PNAS, 2019, 116, 24425