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首页> 外文期刊>Acta Crystallographica, Section B. Structural Science >Synthesis and structure refinement of a new type of layered intergrowth phase: Sb_(3+x)Nb_(3-x)TiO_(14) and Sb_(3+x)Ta_(3-x)TiO_(14)
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Synthesis and structure refinement of a new type of layered intergrowth phase: Sb_(3+x)Nb_(3-x)TiO_(14) and Sb_(3+x)Ta_(3-x)TiO_(14)

机译:新型层状共生相的合成与结构优化:Sb_(3 + x)Nb_(3-x)TiO_(14)和Sb_(3 + x)Ta_(3-x)TiO_(14)

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摘要

Attempts to synthesize Sb-based analogues of the known Bi-based Aurivillius phase, Bi3TiNb09, have led to the discovery of an isomorphous pair of a new type of layered intergrowth phase of general stoichiometry Sb3+xNb3-xATiO14 and Sb3MTa3-xATiO14. Electron diffraction proved essential for the initial recognition and structural characterization of these phases. The structures of Sb3+xNb3-xTiO14, x = 0.89, and Sb3+.tTa3^TiOi4, x=1.26, are reported. The structures are described as ordered intergrowths of /3-Sb2C>4-type and Sb2C>5-type structures, with Nbv/Tav substituting for Sbv in the former and Nbv/Tav/TiIV substituting for Sbv in the latter.
机译:试图合成已知的基于Bi的Aurivillius相Bi3TiNb09的基于Sb的类似物,导致发现了一般化学计量比Sb3 + xNb3-xATiO14和Sb3MTa3-xATiO14的新型分层共生相的同构对。电子衍射证明对于这些相的初始识别和结构表征至关重要。报道了Sb3 + xNb3-xTiO14的结构,x = 0.89,以及Sb3 + .tTa3 ^ TiOi4,x = 1.26。该结构被描述为/ 3-Sb2C> 4-型和Sb2C> 5-型结构的有序共生,其中前者用Nbv / Tav替代Sbv,后者用Nbv / Tav / TiIV替代Sbv。

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