Abstract

The R_xBi_{2 – x}GeO₅ (R = Sm–Yb, Y) and \(\left( {{\text{R}}_{{1\,\, - \,\,x}}^{1}{\text{R}}_{x}^{2}} \right)\)BiGeO₅ (R¹ = Y, R² = Pr, Nd) germanates have been prepared by solid-state reactions, by sequential firing of oxide mixtures in air in the temperature range 1003–1223 K. Their heat capacity has been determined by differential scanning calorimetry. The C_p(T) data have been shown to be well represented by the classic Maier–Kelley equation in the range 350–1000 K.

中文翻译：

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RBiGeO 5（R = Sm–Yb，Y）和$$ \ left（{{\ text {R}} _ {{1-x}} ^ {1} {\ text {R}} _ { x} ^ {2}} \ right）$$ BiGeO 5（R 1 = Y; R 2 = Pr，Nd）德国人

摘要

R _x Bi _{2 – x} GeO ₅（R = Sm–Yb，Y）和\（\ left（{{\ text {R}} _ {{1 \，\，-\，\，x}} ^ { 1} {\ text {R}} _ {x} ^ {2}} \ right）\） BiGeO ₅（R ¹ = Y，R ² = Pr，Nd）锗酸盐已通过固相反应按顺序制备在1003至1223 K的温度范围内在空气中燃烧氧化物混合物。其热容量已通过差示扫描量热法确定。所述Ç _p（Ť）已显示数据通过在350-1000 K.范围经典迈尔-凯利方程得到很好的体现