Journal
SOLID STATE IONICS
Volume 373, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.ssi.2021.115795
Keywords
Lithium niobate; Electrical conductivity; Mobility; Doping; Impurities
Categories
Funding
- Ministry of Science and Higher Education Russian Federation [0186-2021-0022, AAAA-A21-118022190125-2]
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In a series of lithium niobate crystals, it was found that the mobility of Li+ ions sharply increases as the crystal approaches stoichiometric composition, especially along the polar direction. Additionally, doping lithium niobate crystals with under-threshold concentrations of non-photorefractive Mg and Zn substantially decreases the mobility of H+ ions.
IR absorption spectroscopy and electrical conductivity have been studied in a series of lithium niobate crystals. We have established that mobility of Li+ ion sharply increases when a crystal approaches stoichiometric composition. This is especially true along the polar direction of a crystal. We have also established that doping of lithium niobate crystals with under-threshold concentrations of non-photorefractive Mg and Zn substantially decreases mobility of H+ ions.
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