Автор |
C Deenadas |
Автор |
H V Keer |
Автор |
R V Gopala Rao |
Автор |
A B Biswas |
Дата выпуска |
1966-11-01 |
dc.description |
The heat capacity of potassium manganese trifluoride has been reported in the range 80-300°K. Two anomalies were observed, one at 83·3°K and the other at 179°K. The transition at 83·3°K is attributed to an antiferromagnetic ordering of the manganese ions below this temperature. The second transition, at 179·0°K, is a small hump associated with a crystal structural change. The heat capacity below 80°K is calculated using a Debye-Einstein type of function. The thermodynamic functions such as entropy, enthalpy and free energy have been evaluated and tabulated at 20 degK intervals over the range 80-300°K. The values of C<sub>p</sub>, S<sub>T</sub> - S<sub>0</sub>, H<sub>T</sub> - H<sub>0</sub> and - (G<sub>T</sub> - H<sub>0</sub>)/T are 27·5 cal mole<sup>-1</sup> degK<sup>-1</sup>, 38·02 cal mole<sup>-1</sup> degK<sup>-1</sup>, 5399 cal mole<sup>-1</sup> and 19·92 cal mole<sup>-1</sup> degK<sup>-1</sup>, respectively, at 298·15°K. |
Формат |
application.pdf |
Издатель |
Institute of Physics Publishing |
Название |
Heat capacity of potassium manganese trifluoride |
Тип |
paper |
DOI |
10.1088/0508-3443/17/11/304 |
Print ISSN |
0508-3443 |
Журнал |
British Journal of Applied Physics |
Том |
17 |
Первая страница |
1401 |
Последняя страница |
1404 |
Аффилиация |
C Deenadas; National Chemical Laboratory, Poona-8, India |
Аффилиация |
H V Keer; National Chemical Laboratory, Poona-8, India |
Аффилиация |
R V Gopala Rao; National Chemical Laboratory, Poona-8, India |
Аффилиация |
A B Biswas; National Chemical Laboratory, Poona-8, India |
Выпуск |
11 |