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Low-temperature heat capacity and thermodynamic functions of dysprosium selenide Dy2Se3 Научная публикация

Журнал Thermochimica Acta
ISSN: 1872-762X , E-ISSN: 0040-6031
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 Bespyatov M.A. 1 , Musikhin A.E. 1 , Zelenina L.N. 1 , Chusova T.P. 1 , Nikolaev R.E. 1 , Korolkov I.V. 1
Организации
1 Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences

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
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
OpenAlex 2
Альметрики: