Germanate NdGaGe2O7: Synthesis, Structure, and Thermophysical Properties

被引：4
作者：
Denisova, L. T. [1 ]
Kargin, Yu F. [2 ]
Irtyugo, L. A. [1 ]
Beletskii, V. V. [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 / 05期
关键词：
solid-phase synthesis; structure; germanates of rare-earth elements; differential scanning calorimetry; high-temperature heat capacity; thermodynamic properties; TEMPERATURE HEAT-CAPACITY; CRYSTAL-STRUCTURE; NEUTRON-DIFFRACTION; FERGE(2)O(7); R=LA; PR;
D O I：
10.1134/S0036023620050071
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Polycrystalline samples of gallium neodymium germanate NdGaGe(2)O(7)were synthesized by solid-phase reactions from a stoichiometric mixture of oxides Nd2O3, Ga2O3, and GeO(2)under sequential stepwise calcination in the air at temperatures in the range 1273-1473 K. The heat capacity-temperature dependence for the synthesized samples was studied by differential scanning calorimetry in the range 350-1000 K. The experimentalC(p)=f(T) data were used to calculate the thermodynamic functions (enthalpy, entropy, and reduced Gibbs energy changes) of NdGaGe2O7.
引用
收藏
页码：631 / 635
页数：5
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