Synthesis and high-temperature heat capacity of Gd2Sn2O7

作者：Lyubov T. Denisova, L. A. Irtyugo, Yu. F. Kargin, В. В. Белецкий, Viktor M. Denisov · 发表于：Inorganic Materials · 年份：2016 · DOI：10.1134/s0020168516060029 · 被引用次数：5 · 研究领域：Nuclear materials and radiation effects、Nuclear Materials and Properties、Luminescence Properties of Advanced Materials

Gd2Sn2O7 gadolinium stannate with the pyrochlore structure has been prepared by solid-state reaction and its high-temperature heat capacity has been determined by differential scanning calorimetry in the temperature range 350–1020 K. The C p (T) data are shown to be well represented by the classic Maier–Kelley equation. The experimental C p (T) data have been used to evaluate the thermodynamic functions of gadolinium stannate: enthalpy increment H°(T)–H°(339 K), entropy change S°(T)–S°(339 K), and reduced Gibbs energy Ф°(Т).