Heat Capacity of the Gd2Ti2O7 and Lu2Ti2O7 Pyrochlores in the Range 350-1000 K

被引：5
|
作者：
Denisova, L. T. [1 ]
Chumilina, L. G. [1 ]
Ryabov, V. V. [2 ]
Kargin, Yu. F. [3 ]
Belousova, N. V. [1 ]
Denisov, V. M. [1 ]
机构：
[1] Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Svobodnyi Pr 79, Krasnoyarsk 660041, Russia
[2] Russian Acad Sci, Ural Branch, Inst Met, Ul Amundsena 101, Ekaterinburg 620016, Russia
[3] Russian Acad Sci, Baikov Inst Met & Mat Sci, Leninskii Pr 49, Moscow 119991, Russia
来源：
INORGANIC MATERIALS | 2019年 / 55卷 / 05期
关键词：
gadolinium and lutetium titanates; structure; high-temperature heat capacity; thermodynamic functions; SINGLE-CRYSTAL GROWTH; TITANATE PYROCHLORES; FORMATION ENTHALPIES; EARTH;
D O I：
10.1134/S0020168519050029
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Gd2Ti2O7 and Lu2Ti2O7 titanates (pyrochlore structure, sp. gr. Fd3m) have been prepared by solid-state reactions in air at temperatures from 1673 to 1773 K using the Gd2O3, Lu2O3, and TiO2 oxides as starting materials. Their high-temperature heat capacity has been determined by differential scanning calorimetry in the range 350-1000 K. The experimental heat capacity data have been used to evaluate the thermodynamic functions of gadolinium and lutetium dititanates.
引用
收藏
页码：477 / 481
页数：5
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