Growth, stoichiometry and properties of LiNbO3 single crystals
Tóm tắt
LiNbO3 single crystals were grown from melt by Czochralski method, for acousto-electronic purposes. The stoichiometric problems in connection with growing were studied by chemical methods: gravimetric method, based on the determination of Nb in its NbO(Oxine)3 complex; volumetric method, involving titration of peroxo-niobium(V) complex; spectrophotometric determination, in form of peroxo-niobium(V) complex in its acidic solution at 340 nm. The properties of crystals were investigated by physical methods. The inclusions, strains were studied by different microscopic investigations.
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