Hq. Su et al., Study of energy transfer in KMgF3 : Eu-X (X = Gd, Cr, Ce) by the decay model of P-6(7/2) exited state of Eu2+, CHEM P LETT, 335(1-2), 2001, pp. 17-22
Energy transfer processes between Eu2+ and Gd3+, Cr3+, Ce3+ ions in KMgF3,
which are difficult to study spectroscopically, have been investigated by u
sing the proposed four-level decay model of the P-6(7/2) excited state of t
he Eu2+ ion. Gd3+ and Ce3+ transfer its energy to the vibronic transition o
f the P-6(7/2) --> S-8(7/2) transition of Eu2+, whereas Cr3+ receive energy
from Eu2+ via the d-d interaction. The energy transfer from the Eu2+ 4f(6)
5d level to the Ce3+ 4f5d state is observed spectroscopically, and the ener
gy transfer mechanism is discussed. (C) 2001 Elsevier Science B.V. All righ
ts reserved.