Temperature Dependence of Luminescence Decay from the ^{4}G_{5/2} State of Sm^{3+} in Cs_{2}NaSm_{x}Y_{1-x}Cl_{6} and Cs_{2}NaSm_{x}Eu_{y}Y_{1-x-y}Cl_{6}

• Authors: T. Luxbacher , H. Fritzer , C. Flint
• Languages of publication: EN

Abstracts

EN

Luminescence decay curves for the ^{4}G_{5/2} → ^{6}H_{7/2} emission of Sm^{3+} in the cubic hexachloroelpasolite crystals Cs_{2}NaSm_{x}Y_{1-x}Cl_{6} (x=0.005 to x=1) and Cs_{2}NaSm_{x}Eu_{y}Y_{1-x-y}Cl_{6} (x=0.01 to x=0.95, y=0.05 to y =0.99) have been measured over the temperature range 10 K to 300 K using pulsed laser excitation into the ^{4}G_{5/2} state of Sm^{3+}. The luminescence from this state is strongly quenched by cross relaxation to Sm^{3+} acceptors and energy transfer to the ^{5}D_{0} state of Eu^{3+}. The temperature dependence of cross relaxation and of energy transfer is discussed in terms of the involved mechanisms.

Keywords

EN

33.50.Dq; 33.50.Hv; 78.55.Hx

Discipline

• 33.50.Hv: Radiationless transitions, quenching
• 33.50.Dq: Fluorescence and phosphorescence spectra
• 78.55.Hx: Other solid inorganic materials

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1996
• Volume: 90
• Issue: 2
• Pages: 307-313

Dates

published

1996-08

Contributors

author

T. Luxbacher

• Institut für Physikalische und Theoretische Chemie, Technische Universität Graz, 8010 Graz, Austria

author

H. Fritzer

• Institut für Physikalische und Theoretische Chemie, Technische Universität Graz, 8010 Graz, Austria

author

C. Flint

• Laser Laboratory, Department of Chemistry, Birkbeck College, 29, Gordon Square, London WC1H 0PP, U.K.

Identifiers

DOI

10.12693/APhysPolA.90.307