Composition dependence of the lattice constants in LiTaO3 |
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| Authors: | B C Grabmaier T Berthold M Ostertag |
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| Institution: | 1. Siemens AG , Corporate Research and Development , Otto-Hahn-Ring 6, 8000, München, FRG;2. Technische Universit?t München , Lichtenbergstr. 4, 8046, Garching, FRG |
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| Abstract: | Abstract The composition range of lithium tantalate was found between 46.5 and 50.0 mole% Li. The congruent melt composition, from which homogeneous single crystals can be grown, was determined at about 48.5 mole% Li2O. Due to Li2O evaporation during the reaction of Li2CO3 and Ta2O5 the starting composition depends on the reaction conditions. The lattice constants change with the composition comparable to LiNbO3. |
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