Relation between photoluminescence emission and local order-disorder in the CaTiO3 lattice modifier

被引：59

作者：

de Lazaro, Sergio

Milanez, Juliana

de Figueiredo, Alberthmeiry T.

Longo, Valeria M.

Mastelaro, Valmor R.

De Vicente, Fabio S.

Hernandes, Antonio C.

Varela, Jose A.

Longo, Elson

机构：

[1] Univ Fed Sao Carlos, Dept Quim & Engn Mat, Lab Interdisciplinar Eletroquim & Ceram, BR-13565905 Sao Carlos, SP, Brazil

[2] USP, IFSC, BR-13560970 Sao Carlos, SP, Brazil

[3] UNESP, Lab Interdisciplinar Eletroquim & Ceram, BR-14801970 Araraquara, SP, Brazil

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 11期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1063/1.2713359

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this letter, the authors propose that photoluminescence emission in CaTiO3 is affected not only by disorder in the lattice former but also by structural disorder in the lattice modifier. Structural disorder was evaluated by Ti, Ca K-edge x-ray absorption near-edge structure experiments and by photoluminescence emission. The preedge feature of the Ca K edge was related to the intensity of photoluminescence emission. The results of the preedge feature of the Ca K-edge x-ray absorption near-edge structure confirm the presence of different Ca coordination numbers, namely, Ca-O-11 and Ca-O-12. (c) 2007 American Institute of Physics.

引用

页数：3

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