P-6(7/2)-excited-state decay mechanism and energy-transfer processes in KMgF3 : Eu2+ and KMgF3 : EuX (X = Gd, Ce, Cr)

Authors
Su, HQ Jia, ZH Shi, CS Xin, J Reid, SA
Citation
Hq. Su et al., P-6(7/2)-excited-state decay mechanism and energy-transfer processes in KMgF3 : Eu2+ and KMgF3 : EuX (X = Gd, Ce, Cr), CHEM MATER, 13(11), 2001, pp. 3969-3974
Citations number
27
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
CHEMISTRY OF MATERIALS
ISSN journal
08974756 → ACNP
Volume
13
Issue
11
Year of publication
2001
Pages
3969 - 3974
Database
ISI
SICI code
0897-4756(200111)13:11<3969:PDMAEP>2.0.ZU;2-X
Abstract
A four-level decay model in KMgF3:Eu2+ is proposed. The decay profiles of t he P-6(7/2) excited state of Eu2+ are biexponential, and the physical impli cation of each term in the fit equation responsible for the model is interp reted. The evidence obtained spectroscopically for supporting the model is presented. A new method to study energy transfer between Eu2+ and X3+ in KM gF3:Eu-X (X = Gd, Ce, Cr) is established on the basis of the proposed model .