Different sites for divalent europium luminescence in BaMgF4
1987; Elsevier BV; Volume: 67; Issue: 1 Linguagem: Inglês
10.1016/0022-4596(87)90345-8
ISSN1095-726X
AutoresE. Banks, A.M. Srivastava, A. Halperin,
Tópico(s)Atomic and Subatomic Physics Research
ResumoAbstract The Eu2+ luminescence of the compound Ba1−xEuxMgF4 (x = 0.10, 0.20, 0.30, 0.55) depends strongly on the conditions for synthesis and on the temperature. Two 5d-4f emission bonds whose relative intensities depend on the europium concentration and on the conditions of preparation, have their maxima at about 420 and 470 nm, respectively. A 4f-4f( 6 P 7 2 8 S 7 2 ) line emission is observed in the low europium concentration samples.
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