EPR characterization of erbium in glasses and glass ceramics

Electron paramagnetic resonance (EPR) is a well-established spectroscopic technique for electronic structure characterization of rare-earth ion impurities in crystalline and amorphous hosts. EPR spectra of erbium-doped glass matrices and nanocomposites can provide information about local structure variations induced by changes in chemical composition or crystallization processes. Characterization possibilities of Er3+ ions in glasses and glass ceramics including direct EPR measurements, indirect investigations via secondary paramagnetic probes, and optically detected magnetic resonance techniques are considered in this article. ----/ / /---- This is the pre-print of the following article: A. Antuzevics, EPR characterization of erbium in glasses and glass ceramics, Low Temperature Physics 46, 1149 (2020), which has been published at https://aip.scitation.org/doi/10.1063/10.0002465 under license by AIP Publishing. This article may be used for non-commercial purposes in accordance with AIP Publishing Terms and Conditions for Sharing and Self-Archiving.The author expresses gratitude to Guna Krieke and Professor Uldis Rogulis for valuable discussions during the preparation of this article. This research is funded by the Latvian Council of Science, project “Novel transparent nano-composite oxyfluoride materials for optical applications,” Project No. LZP-2018/1-0335. Institute of Solid State Physics, University of Latvia as the Center of Excellence has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART2