High-temperature heat capacity and thermodynamic properties of Tb2Sn2O7

被引：39

作者：

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

Irtyugo, L. A. ^{[1
]}

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

Beletskii, V. 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, Baikov Inst Met & Mat Sci, Leninskii Pr 49, Moscow 119991, Russia

来源：

INORGANIC MATERIALS | 2017年 / 53卷 / 01期

关键词：

terbium stannate; high-temperature heat capacity; thermodynamic functions;

D O I：

10.1134/S0020168517010046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tb2Sn2O7 has been prepared by solid-state reaction in air at 1473 K over a period of 200 h and its isobaric heat capacity has been studied experimentally in the range 350-1073 K. The C (p)(T) data for this compound have no extrema and are well represented by the classic Maier-Kelley equation. The experimental C (p)(T) data have been used to evaluate the thermodynamic properties of terbium stannate (pyrochlore structure): enthalpy increment HA degrees(T)-HA degrees(350 K), entropy change SA degrees(T)-SA degrees(350 K), and reduced Gibbs energy DA degrees(D cent).

引用

页码：93 / 95

页数：3

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