High-temperature heat capacity and vibrational spectra of Eu2Sn2O7
- Авторы: Denisova L.T.1, Irtyugo L.A.1, Kargin Y.F.2, Denisov V.M.1, Beletskii V.V.1, Shubin A.A.1
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Учреждения:
- Institute of Nonferrous Metals and Materials Science
- Baikov Institute of Metallurgy and Materials Science
- Выпуск: Том 52, № 8 (2016)
- Страницы: 811-814
- Раздел: Article
- URL: https://journals.rcsi.science/0020-1685/article/view/157841
- DOI: https://doi.org/10.1134/S0020168516080057
- ID: 157841
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Аннотация
The Eu2Sn2O7 compound has been prepared by solid-state reaction (by sequentially firing a stoichiometric mixture of Eu2O3 and SnO2 in air at 1273 and 1473 K) and its heat capacity has been determined by differential scanning calorimetry in the temperature range 370–1000 K. The heat capacity data have been used to evaluate the thermodynamic properties of europium stannate: enthalpy increment H°(T)–H°(370 K), entropy change S°(T)–S°(370 K), and reduced Gibbs energy Ф°(T). Raman spectra of Eu2Sn2O7 polycrystals with the pyrochlore structure have been measured in the range 200–1200 cm–1.
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Об авторах
L. Denisova
Institute of Nonferrous Metals and Materials Science
Автор, ответственный за переписку.
Email: antluba@mail.ru
Россия, pr. im. gazety Krasnoyarskii rabochii 95, Krasnoyarsk, 660025
L. Irtyugo
Institute of Nonferrous Metals and Materials Science
Email: antluba@mail.ru
Россия, pr. im. gazety Krasnoyarskii rabochii 95, Krasnoyarsk, 660025
Yu. Kargin
Baikov Institute of Metallurgy and Materials Science
Email: antluba@mail.ru
Россия, Leninskii pr. 49, Moscow, 119991
V. Denisov
Institute of Nonferrous Metals and Materials Science
Email: antluba@mail.ru
Россия, pr. im. gazety Krasnoyarskii rabochii 95, Krasnoyarsk, 660025
V. Beletskii
Institute of Nonferrous Metals and Materials Science
Email: antluba@mail.ru
Россия, pr. im. gazety Krasnoyarskii rabochii 95, Krasnoyarsk, 660025
A. Shubin
Institute of Nonferrous Metals and Materials Science
Email: antluba@mail.ru
Россия, pr. im. gazety Krasnoyarskii rabochii 95, Krasnoyarsk, 660025
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