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  

• Publisher: Institute of Physics, Polish Academy of Sciences
• 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

Identifiers

DOI

10.12693/APhysPolA.95.343