X-ray absorption spectroscopy studies of Ba1-xCaxTiO3

被引：22

作者：

Asokan, K ^{[1
]}

Jan, JC

Chiou, JW

Pong, WF

Tseng, PK

Lin, IN

机构：

[1] Tamkang Univ, Dept Phys, Tamsui 251, Taiwan

[2] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Ctr Mat Sci, Hsinchu 300, Taiwan

来源：

JOURNAL OF SYNCHROTRON RADIATION | 2001年 / 8卷

关键词：

XANES; titanates; perovskites;

D O I：

10.1107/S0909049501002084

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We report x-ray absorption near edge spectroscopy (XANES) of Ca and O K-edges of Ba1-xCaxTiO3 (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 t(2g) and show strong dependence on concentration.

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页码：839 / 841

页数：3

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