OPTICAL STUDY OF THE TB3-]EU3+ ENERGY-TRANSFER IN CALCIUM FLUORAPATITE()

Authors
TACHIHANTE M ZAMBON D COUSSEINS JC
Citation
M. Tachihante et al., OPTICAL STUDY OF THE TB3-]EU3+ ENERGY-TRANSFER IN CALCIUM FLUORAPATITE(), European journal of solid state and inorganic chemistry, 33(8), 1996, pp. 713-725
Citations number
13
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
European journal of solid state and inorganic chemistry → ACNP
ISSN journal
09924361
Volume
33
Issue
8
Year of publication
1996
Pages
713 - 725
Database
ISI
SICI code
0992-4361(1996)33:8<713:OSOTTE>2.0.ZU;2-I
Abstract
The Tb3+ --> Eu3+ energy transfer mechanism in Ca6Na2Tb1.75Y0.25-xEux( PO4)(6)F-2 (0 < x less than or equal to 0.25) is reported and discusse d. The fluorescence dynamics is governed by a rapid diffusion through the donor ions. Both D-5(4) of Tb3+ and D-5(0) of Eu3+ are the excited levels involved in the energy transfer. Moreover it is responsible fo r the D-5(0) population for low Eu3+ concentrations and it shows a dou ble characteristic, radiative and non-radiative.