Photoluminescence of barium-calcium titanates obtained by the microwave-assisted hydrothermal method (MAH)

被引：28

作者：

Souza, A. E. ^{[1
]}

Silva, R. A. ^{[1
]}

Santos, G. T. A. ^{[1
]}

Moreira, M. L. ^{[2
]}

Volanti, D. P. ^{[3
]}

Teixeira, S. R. ^{[1
]}

Longo, E. ^{[3
]}

机构：

[1] Univ Estadual Paulista, UNESP, DFQB, BR-19060080 Presidente Prudente, SP, Brazil

[2] Univ Fed Sao Carlos, Dept Quim, LIEC, BR-13560 Sao Carlos, SP, Brazil

[3] Univ Estadual Paulista, LIEC, IQ, Araraquara, SP, Brazil

来源：

CHEMICAL PHYSICS LETTERS | 2010年 / 488卷 / 1-3期

基金：

巴西圣保罗研究基金会;

关键词：

BEHAVIOR; POWDERS;

D O I：

10.1016/j.cplett.2010.01.065

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ba1-xCaxTiO3 (x = 0, 0.25, 0.50, 0.75, and 1.0) samples report the association of three types of clusters synthesized by the microwave-assisted hydrothermal at 140 degrees C for 40 min. In order to evaluate influence of structural order-disorder degree among them, photoluminescence (PL) emission, X-ray diffraction, FT-Raman spectroscopy and Ultraviolet-Visible absorption were used. The PL emission of the crystalline phases grows up with the calcium concentration and reaches the highest PL emission to 0.75 Ca concentration, which is supported by the symmetry break caused by the phase transition. This PL emission is higher than that of the CaTiO3 phase. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：54 / 56

页数：3

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