ChemInform Abstract: A New Flux, NaCl, to Grow Layered Perovskite-Type Na2Ca2Nb4O13 Crystals.
Abstract
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ChemInform Abstract
The title compound is obtained besides ≈ 20% NaCa2Nb3O10 from the reaction of Na2CO3, CaCO3, and Nb2O5 in a NaCl flux (closed Pt crucible, 1373 K, 10 h, slow cooling). The product consists of transparent, rectangular Na2Ca2Nb4O13 crystals with sizes of up to 1.2 x 1.2 x 0.3 mm. Compared with the synthesis in a Na2SO4 flux, the NaCl flux yields larger crystals which have monoclinic (not orthorhombic) symmetry.