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Fast cross relaxation in lanthanide hexachloroelpasolites: application of the shell model

✍ Scribed by Thomas Luxbacher; Harald P. Fritzer; Ralph Sabry-Grant; Colin D. Flint

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
525 KB
Volume
241
Category
Article
ISSN
0009-2614

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✦ Synopsis

Luminescence decay curves from the 4G5,2 state of Sm'+ in the cubic hexachloroelpasolite crystals Cs,NaSm,Y, xCI, (x = 0.005 to x = 1) have been measured in the temperature range lo-300 K. Energy transfer from the 'G5,2 to the 'F, states occurs at all concentrations studied. At intermediate concentrations the decay curves are strongly non-exponential and are interpreted using a recently developed shell model. Extensions of the model which may provide a better description of the data are briefly discussed.

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