Open AccessX‐ray absorption spectroscopy studies of Ba 1‐ x Ca x TiO 3
Author(s) -
Asokan K.,
Jan J. C.,
Chiou J. W.,
Pong W. F.,
Tseng P. K.,
Lin I. N.
Publication year - 2001
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049501002084
Subject(s) - xanes , spectroscopy , spectral line , x ray absorption spectroscopy , absorption spectroscopy , absorption (acoustics) , x ray spectroscopy , extended x ray absorption fine structure , perovskite (structure) , materials science , doping , analytical chemistry (journal) , transition metal , k edge , absorption edge , crystallography , chemistry , physics , optics , band gap , optoelectronics , biochemistry , chromatography , quantum mechanics , astronomy , composite material , catalysis
We report x‐ray absorption near edge spectroscopy (XANES) of Ca and O K ‐edges of Ba 1‐x Ca x TiO 3 (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 3 d transition metals like Ti, Ni when present in perovskite structure and provides information about p ‐type or hole doping. Presence of considerable amount of 3 d states justifies the reason to consider it as a light 3 d transition metal. The O K ‐edge spectra display characteristic spectral features assigned as e g and t 2 g and show strong dependence on concentration.