| Инд. авторы: | Musikhin A.E., Bespyatov M.A., Shlegel V.N., Safonova O.E |
| Заглавие: | Low-temperature properties of BaWO4 based on experimental heat capacity in the range 5.7-304 K |
| Библ. ссылка: | Musikhin A.E., Bespyatov M.A., Shlegel V.N., Safonova O.E Low-temperature properties of BaWO4 based on experimental heat capacity in the range 5.7-304 K // Journal of Alloys and Compounds. - 2019. - Vol.802. - P.235-243. - ISSN 0925-8388. - EISSN 1873-4669. |
| Внешние системы: | DOI: 10.1016/j.jallcom.2019.06.197; SCOPUS: 2-s2.0-85067542504; WoS: 000474567000028; |
| Реферат: | eng: The heat capacity of barium tungstate single crystal was measured by the adiabatic method in the range of 5.7-304 K. No anomalies in the heat capacity associated with the phase transition were found. The analysis of the functional behavior of heat capacity near zero revealed a low-frequency peak in the phonon density of states of BaWO4. An approach was proposed to allow quantitative description of the acoustic wing of the phonon density of states. The approximation of experimental data by an analytical expression was done, including the temperature region near 0 K. The Debye temperature at absolute zero has been obtained. The thermodynamic functions were calculated: entropy, enthalpy increment and Gibbs free energy. (C) 2019 Elsevier B.V. All rights reserved.
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| Ключевые слова: | CAMOO4; GROWTH; SEARCH; TUNGSTATE; MOLYBDATES; PERFORMANCES; CRYSTALS; OPTICAL-PROPERTIES; THERMODYNAMIC PROPERTIES; Barium tungstate; Laser materials; Thermodynamic functions; Adiabatic calorimetry; Heat capacity; TABLES; |
| Издано: | 2019 |
| Физ. характеристика: | с.235-243 |