Published July 2009 | Version v1
Journal article Metadata-only

Disorder-dependent photoluminescence in Ba0.8Ca0.2TiO3 at room temperature

Creators

  • 1. Instituto de Quimica, UNESP, 14801-970 Araraquara-SP (Brazil)
  • 2. Instituto de Fisica de Sao Carlos, USP, 13560-970 Sao Carlos, SP (Brazil)
  • 3. Center for Lasers and Applications, IPEN, 05508-000 Sao Paulo, SP (Brazil)

Description

The photoluminescence (PL) emission in structurally disordered Ba0.8Ca0.2TiO3 (BCT20) powders was observed at room temperature with laser excitation at lines 355 and 460 nm. The structural evolution perovskite-like titanate BCT20 powders prepared by a soft chemical processing at different annealing temperatures were accompanied by X-ray diffraction (XRD) and X-ray absorption near-edge structure (XANES). Intermediate oxycarbonate phase was identified and your influence with PL emission was discarding. BCT20 annealed at 500 deg. C displays intense PL emission. The results indicate relationship between broad PL band and order-disorder degree.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.jlumin.2009.01.014

Additional details

Identifiers

DOI
10.1016/j.jlumin.2009.01.014;
PII
S0022-2313(09)00026-X;

Publishing Information

Journal Title
Journal of Luminescence
Journal Volume
129
Journal Issue
7
Journal Page Range
p. 686-690
ISSN
0022-2313
CODEN
JLUMA8

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41112730
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ABSORPTION SPECTROSCOPY; ANNEALING; BARIUM COMPOUNDS; CALCIUM COMPOUNDS; PEROVSKITE; PHOTOLUMINESCENCE; SEMICONDUCTOR MATERIALS; TEMPERATURE RANGE 0273-0400 K; TETRAGONAL LATTICES; TITANATES; X-RAY DIFFRACTION; X-RAY SPECTROSCOPY
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIFFRACTION; EMISSION; HEAT TREATMENTS; LUMINESCENCE; MATERIALS; MINERALS; OXIDE MINERALS; OXYGEN COMPOUNDS; PEROVSKITES; PHOTON EMISSION; SCATTERING; SPECTROSCOPY; TEMPERATURE RANGE; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Copyright
Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.