Abstract
Oxygen-doped lithium fluoride crystals were colored electrolytically by using a pointed cathode and a flat anode at various temperatures and electric field strengths, which mainly benefit appropriate coloration temperatures and electric field strengths as well as anode structure of used electrolysis apparatus. Characteristic spectral bands of O2−-Va+ dipoles and O2−-Va+ dipole complexes and magnesium-related F, M, magnesium-perturbed F2+, oxygen-perturbed F2+, F3− color centers were observed in absorption spectra of the colored crystals. Current-time curves for the electrolytic colorations and their relationships with the electrolytic coloration processes were given. Color-center formation in the electrolytic coloration was explained.
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