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Synthesis and structural characterization of luminescent materials. The elpasolite Cs2NaTbCl6

Published online by Cambridge University Press:  05 March 2012

V. Poblete ,
G. Navarro ,
V. Martin  and
M. Alvarez
V. Poblete*
Affiliation:
Comisio´n Chilena de Energı´a Nuclear Amuna´tegui 95, P.O. Box 188-D, Santiago, Chile
G. Navarro
Affiliation:
Comisio´n Chilena de Energı´a Nuclear Amuna´tegui 95, P.O. Box 188-D, Santiago, Chile
V. Martin
Affiliation:
Comisio´n Chilena de Energı´a Nuclear Amuna´tegui 95, P.O. Box 188-D, Santiago, Chile
M. Alvarez
Affiliation:
Universidad de Chile, Facultad de Ciencias Fı´sicas y Matema´ticas, Escuela de Postgrado Beaucheff 850, P.O. Box 2777, Santiago, Chile
*
a)Electronic mail: [email protected]
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Abstract

In this work we report the synthesis and structural characterization of the elpasolite Cs2NaTbCl6, belonging to the space group Fm3m. The synthesis is by solid state reaction, in controlled atmosphere. By means of thermal analysis (DTA/TGA), the best crystallization temperatures were obtained: 772.2 °C for 2 hours. Structural studies are carried out by means of DRX-powder diffraction and application of the Rietveld profiles refinement method, for the 32 diffraction lines analyzed. The following crystallographic parameters are obtained: a0=10.7636 (Å), Z=4, M=660.44, V=1247.0 (Å)3, Dx=3.519, and Dexp=3.52±0.01.

Keywords

elpasolitesluminescent materials
Type
Technical Articles
Information
Powder Diffraction , Volume 17 , Issue 1 , March 2002 , pp. 10 - 12
Copyright
Copyright © Cambridge University Press 2002

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