Synthesis and High-Temperature Heat Capacity of Neodymium Titanate

被引：1

作者：

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

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

Chumilina, L. G. ^{[1
]}

Ryabov, V. V. ^{[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, Baikov Inst Met & Mat Sci, Leninskii Pr 49, Moscow 119991, Russia

[3] Russian Acad Sci, Inst Met, Ural Branch, Ul Amundsena 101, Ekaterinburg 620016, Russia

来源：

INORGANIC MATERIALS | 2018年 / 54卷 / 08期

关键词：

neodymium dititanate; differential scanning calorimetry; high-temperature heat capacity; thermodynamic properties; CRYSTAL-STRUCTURE; LA; ND2TI2O7; PR; LN;

D O I：

10.1134/S0020168518080046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Neodymium dititanate, Nd(2)Ti2O(7) (monoclinic structure, sp. gr. P2(1)), has been prepared by solid-state reaction in air at temperatures from 1673 to 1773 K using the Nd2O3 and TiO2 oxides as starting materials. The high-temperature heat capacity of the resultant polycrystalline Nd2Ti2O7 samples has been determined by differential scanning calorimetry. The experimental C (p) (T) data have been used to evaluate the thermodynamic functions of neodymium dititanate (enthalpy increment HA degrees(T)-HA degrees(320 K), entropy change SA degrees(T)-SA degrees(320 K), and reduced Gibbs energy DA degrees(T)) in the temperature range 320-1053 K.

引用

页码：815 / 819

页数：5

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