Electronic modifications in (Ba,La)(Fe,Zn,Y)O_{3−<i>δ</i>} unveiled by oxygen K-edge X-ray Raman scattering

Abstract

Triple-conducting perovskites: Fe 3d–O 2p hybridization affects proton uptake – a larger O → Fe electron transfer decreases O 2− basicity. O-XRS elucidates effects of Fe oxidation state and oversized dopants.