Low-temperature heat capacity and thermodynamic functions of dysprosium selenide Dy2Se3 Научная публикация
| Журнал |
Thermochimica Acta
ISSN: 1872-762X , E-ISSN: 0040-6031 |
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| Вых. Данные | Год: 2020, Том: 686, Номер статьи : 178551, Страниц : 5 DOI: 10.1016/j.tca.2020.178551 | ||
| Ключевые слова | Heat capacity Thermodynamic functions Dysprosium selenide Schottky anomaly | ||
| Авторы |
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| Организации |
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Реферат:
A sample of dysprosium selenide (Dy2Se3) was synthesized and characterized by various physicochemical methods. The heat capacity of Dy2Se3 has been measured in the temperature range from T=4.85 K to T=301.11 K using adiabatic calorimetry. Two pronounced λ-anomalies with maxima at temperatures TC1=6.20 K and TC2=219.40 K were found in the functional behavior of the heat capacity. In addition, the heat capacity of Dy2Se3(cr) showed a continuing excess value consistent with a Schottky anomaly on energy levels lying roughly from 0 to 425 cm−1 above the ground state. On the basis of experimental data on the heat capacity, the values of entropy, enthalpy and reduced Gibbs energy were calculated in the interval from T=0 to T=301 K, and the anomalous contribution to these properties was determined. The value of the absolute entropy obtained was used for calculation of Dy2Se3(cr) entropy formation at T=298.15 K.
Библиографическая ссылка:
Bespyatov M.A.
, Musikhin A.E.
, Zelenina L.N.
, Chusova T.P.
, Nikolaev R.E.
, Korolkov I.V.
Low-temperature heat capacity and thermodynamic functions of dysprosium selenide Dy2Se3
Thermochimica Acta. 2020. V.686. 178551 :1-5. DOI: 10.1016/j.tca.2020.178551 WOS OpenAlex
Low-temperature heat capacity and thermodynamic functions of dysprosium selenide Dy2Se3
Thermochimica Acta. 2020. V.686. 178551 :1-5. DOI: 10.1016/j.tca.2020.178551 WOS OpenAlex
Даты:
| Поступила в редакцию: | 30 окт. 2019 г. |
| Принята к публикации: | 7 февр. 2020 г. |
| Опубликована online: | 19 февр. 2020 г. |
Идентификаторы БД:
| Web of science: | WOS:000528017000017 |
| OpenAlex: | W3007469216 |
Цитирование в БД:
| БД | Цитирований |
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| OpenAlex | 2 |