Electron Spin Resonance investigation of undoped and Li-doped CdWO_4 scintillator crystals
V.V. Laguta, M. Nikl, M. Buryi
TL;DR
This study uses electron spin resonance to analyze how Li-doping affects impurity ions in CdWO4 scintillator crystals, revealing changes in ionic charge states and detailed spectral parameters.
Contribution
It provides precise zero-field splitting parameters and shows how Li-doping alters impurity charge states in CdWO4 crystals.
Findings
Li-doping increases Fe ionic charge from 3+ to 4+
Li-doping increases Mn ionic charge from 1+ to 2+
High-precision ESR spectra of impurities in CdWO4
Abstract
Electron spin resonance (ESR) spectra of Fe3+ and Mn2+ ions have been studied in the nominally pure and 0.05% Li-doped single crystals of CdWO4. The zero-field splitting parameters are determined with a high precision for both of the impurities. The result suggest that the Li-doping leads to the increase of the ionic charge of iron from 3+ to 4+ and of manganese, from 1+ to 2+.
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