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RESEARCH PRODUCT
Colour centres in LiBaF3
I. TaleA. VeispalsP. KulisUldis RogulisV. TaleH.-j. FittingM. Barboza-floresJ. Troksssubject
Magnetic circular dichroismChemistryBiophysicsAnalytical chemistryGeneral ChemistryElectronCondensed Matter PhysicsBiochemistryAtomic and Molecular Physics and OpticsSpectral linelaw.inventionNuclear magnetic resonancelawAbsorption bandLuminescenceElectron paramagnetic resonancedescription
Abstract The X-ray-induced optical absorption (OA) and the spectra of magnetic circular dichroism (MCD) followed by optically detected EPR (ODEPR) have been investigated in undoped LiBaF3 crystals. According to ODEPR, the absorption bands in the spectral region 470–770 nm correspond to the F-type centres, whereas the absorption band at 420 nm is assigned to the hole centres. The redistribution of electrons to the thermal more stable F-type centres indicates that all types of colour centres are annealed in the course of the thermal release of electrons from F-type centres, accompanied by a thermostimulated luminescence.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-06-01 |