Abstract

The PrFeGe₂O₇ and NdFeGe₂O₇ germanates have been prepared by solid-state reactions using stoichiometric mixtures of Pr₂O₃ (Nd₂O₃), Fe₂O₃, and GeO₂ as starting oxides, which were sequentially fired between 1273 and 1473 K in air, and their high-temperature heat capacity has been determined by differential scanning calorimetry. The experimental C_p(T) data obtained have been used to evaluate their thermodynamic properties.

中文翻译：

---

PrFeGe 2 O 7和NdFeGe 2 O 7锗酸盐的高温热容范围为350–1000 K

摘要

通过使用Pr ₂ O ₃（Nd ₂ O ₃），Fe ₂ O ₃和GeO _2的化学计量混合物作为起始氧化物，通过固相反应制备了PrFeGe ₂ O ₇和NdFeGe ₂ O ₇锗酸盐，并进行了焙烧。空气中1273至1473 K之间的温度，其高温热容已通过差示扫描量热法确定。获得的实验C _p（T）数据已用于评估其热力学性质。