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O in MnO, Mn3O4 and Mn2O3

O-K Edges for different manganese oxides. The first peak is from O-p/Mn-d bonded empty states, so is larger for Mn atoms with lower electron counts.

By: Yao Yang

Microscope: Nion UltraSTEM (100 keV)

Energy Resolution: 0.5 eV

Note: The energy axis of the O edge has been calibrated using dual EELS map. 

Ref: Yang, PNAS, 2019, 116, 24425

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