EU-3+ AND GD-3+ SPECTROSCOPY IN FLUOROINDATE GLASSES

被引:37
作者
RIBEIRO, SJL [1 ]
DINIZ, REO [1 ]
MESSADDEQ, Y [1 ]
NUNES, LA [1 ]
AEGERTER, MA [1 ]
机构
[1] USP,INST FIS & QUIM SAO CARLOS,BR-13560970 SAO CARLOS,BRAZIL
关键词
D O I
10.1016/0009-2614(94)00176-6
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Luminescence data for Eu3+ and Gd3+ in fluoroindate glasses are compared to those of a fluorozirconate glass. Emission is observed from Eu3+ 5D(J) (J = 0, 1, 2 and 3) and Gd3+ P-6(7/2) excited-state levels and the results put in evidence Eu-Eu and Gd-Eu energy transfer processes. Vibronic bands related to a 320 cm-1 vibrational mode could be observed for Eu3+ luminescent transitions with DELTAJ = 0, 1 and 2 and also for the P-6(7/2) --> S-8(7/2) transition of Gd3+. Lanthanide ion site symmetry is closer to an inversion center in fluoroindate glasses than it is in fluorozirconate.
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页码:214 / 218
页数:5
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