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Phase transition, growth, and optical properties of NdxLa1−xSc3(BO3)4 crystals

Published online by Cambridge University Press:  31 January 2011

Yunkui Li ,
G. Aka ,
A. Kahn-Harari  and
D. Vivien
Yunkui Li*
Affiliation:
Anhui Institute of Optics and Fine Mechanics, Academia Sinica, P.O. Box 1125, Hefei 230031, Anhui, People's Republic of China
G. Aka
Affiliation:
Laboratoire de Chemie Applique’e de l'Etat Solide, Centre National de la Recherche Scientifique-URA1466, 11 rue, P. et M. Curie, 75231 Paris Cedex 05, France
A. Kahn-Harari
Affiliation:
Laboratoire de Chemie Applique’e de l'Etat Solide, Centre National de la Recherche Scientifique-URA1466, 11 rue, P. et M. Curie, 75231 Paris Cedex 05, France
D. Vivien
Affiliation:
Laboratoire de Chemie Applique’e de l'Etat Solide, Centre National de la Recherche Scientifique-URA1466, 11 rue, P. et M. Curie, 75231 Paris Cedex 05, France
*
e-mail: yunkui li@hotmail.com
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Abstract

The low-temperature phase, trigonal phase, of space group R32 was discovered in the compound LaSc3(BO3)4 (LSB) doped with arbitrary concentration of Nd3+ ions (NLSB). For LSB, the lattice constants are a = 9.820 ± 0.003 Å, c = 7.975 ± 0.003 Å. The decomposition of NLSB phase was observed in two regions of temperature below and above the congruent melting point by differential thermal analysis and x-ray powder diffraction methods. The single crystals of 2 × 2 × 3mm3 of dominant trigonal phase for x = 0.5 were grown by the flux method (LiBO2). Second harmonic generation effect was observed in NLSB for x = 0 to 1. The concentration dependence of fluorescence lifetime was measured and derived from Dexter's theory of resonant energy transfer.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 1 , January 2001 , pp. 38 - 44
Copyright
Copyright © Materials Research Society 2001

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References

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