HESSE, K and GLIEMANN, G (1991) MAGNETIC-FIELD EFFECT ON THE LUMINESCENCE OF OCTAHEDRAL HEXACHLOROSELENATE(IV) - EVIDENCE FOR THE VIBRONIC NATURE OF THE LOW-TEMPERATURE EMISSION. JOURNAL OF PHYSICAL CHEMISTRY, 95 (1). pp. 95-98. ISSN 0022-3654,
Full text not available from this repository.Abstract
The luminescence spectra and emission lifetimes of microcrystalline Cs2SeCl6 and Rb2SeCl6 as functions of temperature (1.9 K less-than-or-equal-to T less-than-or-equal-to 295 K) and applied homogeneous magnetic fields (0 less-than-or-equal-to H less-than-or-equal-to 6 T) are reported. The experimental results indicate the existence of a metastable relaxed excited state A1u', which is for Cs2SeCl6 and Rb2SeCl6 energetically by DELTA-nu- almost-equal-to 16 cm-1 and DELTA-nu- almost-equal-to 20 cm-1, respectively, below a second excited state E(u)'. Both A1u' and E(u)' states are due to the excited electronic state 3T1u of Se(IV) ion split by a static tetragonal Jahn-Teller effect and second-order spin-orbit coupling. From the magnetic field effects on the 1.9 K luminescence (blue shift, increase of the intensity, shortening of the emission lifetime) the vibronic character of the radiative deactivation of the state A1u' has been deduced.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CRYSTALS; CENTERS; SPECTRA; OXIDES; IONS; |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:46 |
| URI: | https://pred.uni-regensburg.de/id/eprint/55111 |
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