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Abstract: Nucleation parameters of LiB3O5 (LBO) that crystallized from high-temperature solution using two different solvents, namely boron oxide (B2O3) and molybdate (MoO3), have been studied for better understanding of the growth process. Our results showed that B2O3 solvent yielded a larger value of metastable zone width than that of molybdate flux, thus giving more stability to the solution. Based on our theoretical considerations, inclusion-free LBO crystals have been grown by spontaneous nucleation and TSSG techniques using B2O3 solvent. Variation of optical absorption coefficient and refractive indices with wavelength has been studied. Results of optical and mechanical properties showed that the grown crystals are highly transparent and possesses hardness higher than that of KTP crystal. [Copyright &y& Elsevier]

Abstract: KNbO3 crystal is an incongruent melting crystal from a peritectic system. At first, a crystal was formed from the molten zone center of the stoichiometric composition using our original modified floating zone technique. Then the crystal was grown continuously using the firstly formed crystal as seed crystal. A small crystal with facets could be grown. The phase of the grown crystal was investigated in comparison to the phase grown by the conventional floating zone technique. [Copyright &y& Elsevier]