Abstract
Near-stoichiometric LiTaO 3 single crystals, 80 mm in diameter and 25–30 mm in length, were grown by conventional Czochralski technique using radio-frequency heating and automatic control system. Two compositions of the starting melt were used, containing accordingly 58 and 60.5 mol% Li 2O. The chemical composition of the grown crystals was estimated by measuring their coercive field to be 49.75–49.8 and 49.93–49.97 mol% Li 2O for these two starting melts.
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