Heat capacity measurements on (Ca0.80Nd0.20)TiO3 and (Ca0.85Nd0.15)TiO3

被引：5

作者：

Nagarajan, K ^{[1
]}

Arita, Y ^{[1
]}

Nakamitsu, N ^{[1
]}

Hanajiri, Y ^{[1
]}

Matsui, T ^{[1
]}

机构：

[1] NAGOYA UNIV, DEPT NUCL ENGN & QUANTUM ENGN, GRAD SCH ENGN, CHIKUSA KU, NAGOYA, AICHI 46401, JAPAN

来源：

JOURNAL OF NUCLEAR MATERIALS | 1996年 / 230卷 / 02期

基金：

日本学术振兴会;

关键词：

D O I：

10.1016/0022-3115(96)00166-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Heat capacity measurements were carried out on (Ca0.85Nd0.15)TiO3 and (Ca0.80Nd0.20)TiO3 in the temperature range of 298-1550 K by using a direct heating pulse calorimeter and a differential scanning calorimeter. The results indicate the presence of two phase transitions, one at 1386 K and another at 1528 K in (Ca0.85Nd0.15)TiO3. The measured heat capacity data were used to derive the values of the thermodynamic functions, namely enthalpy increment, entropy and free energy function, as a function of temperature. The enthalpy and the entropy of the phase transitions were calculated from the heat capacities. The results are discussed in comparison with the literature data for undoped CaTiO3.

引用

页码：124 / 128

页数：5

共 14 条

[1] SPECIFIC-HEAT, THERMAL-DIFFUSIVITY AND THERMAL-CONDUCTIVITY OF SYNROC, PEROVSKITE, ZIRCONOLITE AND BARIUM HOLLANDITE [J].