On the nature of change in Ni oxidation state in BaTiO3-SrTiO3 system

A. I. Lebedev, I. A. Sluchinskaya

XAFS studies of Ni-doped Ba${}_{1-x}$Sr${}_x$TiO${}_3$ solid solution reveal that the Ni oxidation state changes from 4 in SrTiO${}_3$ to 2.5 in BaTiO${}_3$ when varying $x$. This change is…