Vibration and Luminescence Spectroscopic Investigations of the Alkali Rare Earth Double Phosphates M_{3}(RE,Eu)(PO_{4})_{2} (M=K, Rb; RE=La, Gd)

• Authors: M. Kloss , L. Schwarz , J. Hölsä
• Languages of publication: EN

Abstracts

EN

The room temperature IR- and Raman spectra of the different M_{3}RE(PO_{4})_{2} (M = K, Rb; RE = La, Eu, Gd) double phosphates were analysed and used to interpret the vibronic side band structure in the photoluminescence spectra. The intraconfigurational 4f-4f electronic transitions in the photoluminescence spectra of the Eu^{3+} doped M_{3}RE(PO_{4})_{2} were analysed in detail. The crystal field fine structure of the ^{5}D_{0} → ^{7}F_{J} (J=0-4) transitions was analysed accounting for the information on the crystal structure. The effect of the temperature as well as the alkali host cation was evaluated. Finally, a preliminary crystal field energy level scheme for the ^{7}F_{J} (J=0-4) ground term was deduced from the analysis of the photo-luminescence as well as IR- and Raman spectra.

Keywords

EN

61.50.-f; 61.66.Fn; 63.20.-e; 71.20.Dg; 71.20.Eh; 71.70.-d; 78.30.-j; 78.55.-m

Discipline

• 61.66.Fn: Inorganic compounds
• 71.70.-d: Level splitting and interactions(see also 73.20.-r Surface and interface electron states; 75.30.Et Exchange and superexchange interactions)
• 71.20.Eh: Rare earth metals and alloys
• 61.50.-f: Structure of bulk crystals
• 78.55.-m: Photoluminescence, properties and materials(for time resolved luminescence, see 78.47.jd)
• 78.30.-j: Infrared and Raman spectra(for vibrational states in crystals and disordered systems, see 63.20.-e and 63.50.-x, respectively; for Raman spectra of superconductors, see 74.25.nd)
• 63.20.-e: Phonons in crystal lattices(for phonons in superconductors, see 74.25.Kc; see also 43.35.Gk Phonons in crystal lattice, quantum acoustics—in Acoustics Appendix)
• 71.20.Dg: Alkali and alkaline earth metals

• Journal: Acta Physica Polonica A
• Year: 1999
• Volume: 95
• Issue: 3
• Pages: 343-349

Dates

published

1999-03

received

1998-08-22

(unknown)

1999-01-12

Contributors

author

M. Kloss

• Ernst-Moritz-Arndt-University of Greifswald, Institute of Chemistry and Biochemistry, D-17487 Greifswald, Germany

author

L. Schwarz

• Ernst-Moritz-Arndt-University of Greifswald, Institute of Chemistry and Biochemistry, D-17487 Greifswald, Germany

author

J. Hölsä

• University of Turku, Department of Chemistry, FIN-20014 Turku, Finland

Identifiers

DOI

10.12693/APhysPolA.95.343