SrTiO₃、DyScO₃和NdGaO₃单晶的高精度绝对晶格参数测定。
High-precision absolute lattice parameter determination of SrTiO3, DyScO3 and NdGaO3 single crystals.
作者信息
Schmidbauer Martin, Kwasniewski Albert, Schwarzkopf Jutta
机构信息
Leibniz-Institute for Crystal Growth, Max-Born-Str. 2, Berlin, D-12489, Germany.
出版信息
Acta Crystallogr B. 2012 Feb;68(Pt 1):8-14. doi: 10.1107/S0108768111046738. Epub 2012 Jan 6.
The lattice parameters of three perovskite-related oxides have been measured with high precision at room temperature. An accuracy of the order of 10(-5) has been achieved by applying a sophisticated high-resolution X-ray diffraction technique which is based on the modified Bond method. The results on cubic SrTiO(3) [a = 3.905268 (98) Å], orthorhombic DyScO(3) [a = 5.442417 (54), b = 5.719357 (52) and c = 7.904326 (98) Å], and orthorhombic NdGaO(3) [a = 5.428410 (54), b = 5.498407 (55) and c = 7.708878 (95) Å] are discussed in view of possible systematic errors as well as non-stoichiometry in the crystals.
三种钙钛矿相关氧化物的晶格参数已在室温下以高精度测量。通过应用基于改进的邦德方法的复杂高分辨率X射线衍射技术，实现了约10^(-5)量级的精度。针对立方SrTiO₃ [a = 3.905268 (98) Å]、正交DyScO₃ [a = 5.442417 (54)，b = 5.719357 (52) 和c = 7.904326 (98) Å] 以及正交NdGaO₃ [a = 5.428410 (54)，b = 5.498407 (55) 和c = 7.708878 (95) Å] 的结果，从晶体中可能存在的系统误差以及非化学计量比的角度进行了讨论。
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