Photoluminescence in amorphous PLZ

被引：3

作者：

Freitas, GFG

Nasar, RS ^{[1
]}

Cerqueira, M

Melo, DMA

Longo, E

Pizani, PS

Varela, JA

机构：

[1] Univ Fed Rio Grande do Norte, Dept Quim, BR-59072970 Natal, RN, Brazil

[2] Univ Fed Sao Carlos, Dept Quim, BR-13565905 Sao Carlos, SP, Brazil

[3] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Carlos, SP, Brazil

[4] UNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil

来源：

CERAMICS INTERNATIONAL | 2003年 / 29卷 / 07期

关键词：

lead zirconate; photoluminescent materials; amorphous materials;

D O I：

10.1016/S0272-8842(02)00232-8

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Amorphous and crystalline powder of PLZ was prepared by using the polymeric precursor method. TGA-DSC (Thermal analysis and Differential Scanning Calorimetry) shows the decomposition of polymeric resin, an amorphous phase and the crystallization of powder. Raman scattering of powder shows an amorphous and semicrystalline phase at 450 and 550 degreesC, respectively. XRD (X-ray diffraction pattern) of powder shows high crystallinity at 700 degreesC/3 h. PL (Photoluminescence) analysis of powder at 300 degreesC/3 h shows a broad asymmetric peak at 585 nm and increases of calcining time led to intense peaks of PL at 300 degreesC/6 h. This emission could be attributed to Zr --> O from the oxygen-2p orbitals to the zirconate-3d orbitals. (C) 2003 Elsevier Ltd and Techna S.r.l. All rights reserved.

引用

页码：793 / 799

页数：7

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