Abstract

The SmGaGe₂O₇ oxide material has been obtained from initial Sm₂O₃, Ga₂O₃, and GeO₂ oxides by solid-phase synthesis with annealing in air in the temperature range of 1273–1473 K. The structure of the investigated germanate (sp. gr. P2₁/c, a = 7.18610(9) Å, b = 6.57935(8) Å, and c = 12.7932(2) Å) has been established by X-ray diffraction and the high-temperature heat capacity has been determined by differential scanning calorimetry. Using the experimental data on C_p = f(T), the thermodynamic properties of the compound have been calculated.

中文翻译：

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SmGaGe 2 O 7氧化物的结构和热力学性质

摘要

SmGaGe ₂ O ₇氧化物材料是从初始Sm ₂ O ₃，Ga ₂ O ₃和GeO ₂氧化物通过固相合成并在1273–1473 K的温度范围内在空气中退火而获得的。锗（比重= P 2 ₁ / ç，一个= 7.18610（9）埃，b = 6.57935（8）埃，c ^ = 12.7932（2））已经通过X射线衍射和高温建立热容已经通过差示扫描量热法确定。使用C _p上的实验数据＝f（T），已经计算出化合物的热力学性质。