Absorptions and Emissions for the TmCl63- Ion in Cs2NaTmCl6 |
| R. Acevedoa, O.F. Hurtadoa, C. Portilloa and W. Strękb aDepartamento de Quimica Basica, Facultad de Ciencias Fisicas y Matematicas Universidad de Chile, Beauchef 850, Casilla 2777, Santiago-Chile bInstitute of Low Temperature and StructureResearch Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, Poland |
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| Received: March 5, 2001; revised version October 18, 2001 |
| In this work we report both experimental and theoretical studies regarding the Cs2NaTmCl6 elpasolite-type system, for which we have an updated database from linear and nonlinear optics. Both the absorption and the emission spectra for this system are rather complicated and a generalized vibronic crystal field-closure-ligand polarization calculation model has been employed to rationalize the observed spectral intensities. The calculation has been carried out by neglecting the interaction among the internal and the external vibrations and theoretical calculations have been performed with reference to both the emissions 3H4(Γi) --> 3F4(Γj) and the absorptions 3H6(A1) --> 3F4(Γi),1G4(Γi),3H5(Γl) with Γk (k=i,j)=A1,E,T1,T2 and Γl=E,aT1,bT1,T2. The advantages and disadvantages of our model calculation are discussed in the text, and despite the simplicity of the model it is shown that it has got some utility and flexibility to gain understanding in these complex phenomena. |
| DOI: 10.12693/APhysPolA.100.829 PACS numbers: 32.70.Fw |