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首页> 外文期刊>Acta Crystallographica, Section B. Structural Science >Order–disorder of oxygen anions and vacancies in solid solutions of La2TiO5 and La4Ga2O9
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Order–disorder of oxygen anions and vacancies in solid solutions of La2TiO5 and La4Ga2O9

机译:La2TiO5和La4Ga2O9固溶体中氧阴离子的空位和空位

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摘要

Successful Rietveld refinements of seven compounds with theformulae La2Ti(1x)GaxO(5x/2), where x = 0.00, 0.20, 0.50, 0.70, 0.90, 0.95 and 1.00, were performed in order to describe the solid solubility between orthorhombic (Pnam) La2TiO5 and monoclinic (P21/c) La4Ga2O9. The relationship between the end-member structures, which are already known, is discussed; the space-group change is a consequence of ordering the oxygen vacancies that become more numerous as Ga is substituted for Ti. The structures of the solid solutions are also described. The lengths of cell edges obey Vegard’s rule.
机译:用式La2Ti(1x)GaxO(5x / 2)对七个化合物进行了成功的Rietveld精制,其中x = 0.00、0.20、0.50、0.70、0.90、0.95和1.00,以描述正交晶(Pnam)之间的固溶度La2TiO5和单斜晶(P21 / c)La4Ga2O9。讨论了已知的末端成员结构之间的关系;空间群的变化是由于Ga替代Ti导致氧空位变得越来越多的结果。还描述了固溶体的结构。细胞边缘的长度遵循Vegard的规则。

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