Thermodynamic functions of magnesium gallate MgGa2O4 in the temperature range 0-1200 K

被引：6

作者：

Kondrat'eva, O. N. ^{[1
]}

Tyurin, A. V. ^{[1
]}

Nikiforova, G. E. ^{[1
]}

Khoroshilov, A. V. ^{[1
]}

Smirnova, M. N. ^{[1
]}

Ketsko, V. A. ^{[1
]}

Gavrichev, K. S. ^{[1
]}

机构：

[1] RAS, Kurnakov Inst Gen & Inorgan Chem, 31 Leninsky Prospect, Moscow 119991, Russia

来源：

THERMOCHIMICA ACTA | 2016年 / 641卷

关键词：

Magnesium gallate; Heat capacity; Thermodynamic functions; Adiabatic calorimetry; Differential scanning calorimetry; HEAT-CAPACITY;

D O I：

10.1016/j.tca.2016.08.015

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The heat capacity of magnesium gallate MgGa2O4 was measured by adiabatic calorimetry (7-347 K) and differential scanning calorimetry (322-1200 K). Thermodynamic functions (heat capacity, entropy, enthalpy change and derived Gibbs energy) were calculated in the range 0-1200 K. Gibbs energy of formation of MgGa2O4 was estimated using the standard entropy S (298.15 K) from this work: Af G (MgGa2O4, 298.15 K)= -1594.3 f 4.3 kJ mol(-1). The Debye characteristic temperature OD = 750 20 K was calculated from heat capacity data and from elastic constants. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：49 / 54

页数：6

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