X-ray absorption spectroscopy studies of Ba(1-x)Ca(x)TiO3.
We report x-ray absorption near edge spectroscopy (XANES) of Ca and O K-edges of Ba(1-x)Ca(x)TiO3 (x = 0, 0.01, 0.08, 1) and understand the spectral features related to the electronic structure of these perovskites. The XANES spectra of Ca K-edge possess a pre-edge peak similar to other 3d transition metals like Ti, Ni when present in perovskite structure and provides information about p-type or hole doping. Presence of considerable amount of 3d states justifies the reason to consider it as a light 3d transition metal. The O K-edge spectra display characteristic spectral features assigned as e(g) and t2g and show strong dependence on concentration.
Asokan
K
K
Department of Physics, Tamkang University, Tamsui, Taiwan. asokan@polaron.phys.tku.edu.tw
Jan
J C
JC
Chiou
J W
JW
Pong
W F
WF
Tseng
P K
PK
Lin
I N
IN