New layered perovskites: ABiNb2O7 and APb2Nb3O10 (A=Rb OR Cs)
β Scribed by M.A. Subramanian; J. Gopalakrishnan; A.W. Sleight
- Book ID
- 113187668
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 265 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0025-5408
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The crystal structure of a layered perovskite niobate KCa 2 Nb 3 O 10 was investigated through single-crystal X-ray analysis. The niobate crystallized in the orthorhombic system Cmcm with lattice constants of a β«Ψβ¬ 3.8802(9) A s , b β«Ψβ¬ 29.508(6) A s , c β«Ψβ¬ 7.714(1) A s , V β«Ψβ¬ 883.2(2) A s 3 . The
New members of Dion+Jacobson (D-J)-type layered perovskites of the general formula A[A 2 B 3 O 10 ] (A β«Ψβ¬ Rb, Cs; A β«Ψβ¬ Sr, Ba; B β«Ψβ¬ Nb, Ta) were prepared by solid-state reactions between the metal oxides, nitrates, and carbonates under speci5c conditions. The crystal structures were determined us
The crystal structures of n β«Ψβ¬ 3 Dion+Jacobson phases MLa 2 Ti 2 TaO 10 (M β«Ψβ¬ Cs, Rb) and NaLa 2 Ti 2 TaO 10 ' xH 2 O (x β«Ψβ¬ 2, 0.9, 0) have been investigated by the Rietveld analysis of their powder XRD patterns. These compounds show the newtype ordering sequence of (Ti 1/2 Ta 1/2 )O 6 +TiO 6 +(T