Effects of compositional phase transitions on luminescence of Sr1-xCaxTiO3:Pr3+

被引：82

作者：

Jia, WY ^{[1
]}

Xu, WL ^{[1
]}

Rivera, I ^{[1
]}

Pérez, A ^{[1
]}

Fernández, F ^{[1
]}

机构：

[1] Univ Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USA

来源：

SOLID STATE COMMUNICATIONS | 2003年 / 126卷 / 03期

基金：

美国国家航空航天局;

关键词：

ferroelectrics; phase transitions;

D O I：

10.1016/S0038-1098(02)00879-7

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The mixed-compound of Sri(1-x)Ca(x)TiO(3) has shown several compositional phase transformations, Photoluminescence and excitation spectra of the samples with different x and doped with 0.2% Pr3+ were investigated. Changes in the emission spectra were observed in different phases. The blue emission at 491 nm from (3)p(0) state was found quite strong in the tetragonal phase, and was thermally quenched in the orthorhombic phases. The intensity of the red luminescence from D-1(2) increases with increasing content of calcium. The strongest red emission is obtained from CaTiO3:Pr3+. The results are discussed based on the configuration coordinate model and interaction of Pr with the charge transfer exciton state of the Ti complex. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：153 / 157

页数：5

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