Abstract

The energy loss near edge structure (ELNES) of the O–K, Ti–L 23 and Mn–L 23 edges have been recorded in hexagonal Ba 3Ti 2MnO 9 with an energy resolution of 0.10–0.20 eV using a monochromator on a commercial transmission electron microscope (TEM) and compared with a tetragonal BaTiO 3 reference sample. The formal valency and symmetry of Mn have been determined using atomic multiplets calculations and its effect on the electronic structure of BaTiO 3 has been interpreted through a molecular-orbital model.

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