Synthesis and the High-Temperature Heat Capacity Investigation of EuBiGeO5

被引：1

作者：

Denisova, L. T. ^{[1
]}

Kargin, Yu. F. ^{[2
]}

Galiakhmetova, N. A. ^{[1
]}

Belousova, N. V. ^{[1
]}

Denisov, V. M. ^{[1
]}

机构：

[1] Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia

[2] Russian Acad Sci, Baikov Inst Met & Mat Sci, Moscow 119991, Russia

来源：

RUSSIAN JOURNAL OF INORGANIC CHEMISTRY | 2020年 / 65卷 / 01期

关键词：

bismuth europium germanate; solid-phase synthesis; high-temperature heat capacity; thermodynamic properties; GDBIGEO5;

D O I：

10.1134/S0036023620010064

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The EuBiGeO5 compound has been prepared from stoichiometric mixtures of Eu2O3, Bi2O3, and GeO2 by solid-phase synthesis with subsequent multistage annealing in the temperature range of 1003-1223 K. The molar heat capacity of polycrystalline bismuth europium germanate has been determined by differential scanning calorimetry in the temperature range 350-1000 K. The experimental temperature dependence of heat capacity C-p = f(T) contains no anomalies and can be fitted using the Maier-Kelley equation. The key thermodynamic functions of bismuth europium germanate (changes in enthalpy, entropy, and Gibbs free energy) have been calculated.

引用

页码：1 / 4

页数：4

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