Synthesis, Crystal Structure and Thermodynamic Properties of LuGaTi2O7 | Научно-инновационный портал СФУ

Synthesis, Crystal Structure and Thermodynamic Properties of LuGaTi2O7

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1134/S0020168520120055

Ключевые слова: high-temperature heat capacity, lutetium gallium titanate, mixed oxide compounds, thermodynamic properties

Аннотация: Abstract—: Single-phase LuGaTi2O7 samples have been prepared by solid-state reaction in a starting mixture of Lu2O3, Ga2O3, and TiO2 via sequential firing in air at temperatures of 1273 and 1573 K. The crystal structure of the lutetium gallium dititanate has been determined by the Rietveld method (profile analysis of X-ray diffraction patterns of polycrystalline powders): sp. gr. Pcnb; a = 9.75033(13) Å, b = 13.41425(17) Å, c = 7.29215(9) Å, V = 957.32(2) Å3, d = 6.28 g/cm3. The heat capacity of LuGaTi2O7 has been determined as a function of temperature by differential scanning calorimetry in the range 320–1000 K. The Cp(T) data thus obtained have been used to calculate the principal thermodynamic functions of the oxide compound. © 2020, Pleiades Publishing, Ltd.

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Издание

Журнал: Inorganic Materials

Выпуск журнала: Vol. 56, Is. 12

Номера страниц: 1242-1247

ISSN журнала: 00201685

Издатель: Pleiades journals

Авторы

  • Denisova L.T. (Siberian Federal University, Krasnoyarsk, 660041, Russian Federation)
  • Molokeev M.S. (Siberian Federal University, Krasnoyarsk, 660041, Russian Federation; Kirensky Institute of Physics, Krasnoyarsk Scientific Center (Federal Research Center), Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation)
  • Chumilina L.G. (Siberian Federal University, Krasnoyarsk, 660041, Russian Federation)
  • Kargin Y.F. (Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, 119991, Russian Federation)
  • Denisov V.M. (Siberian Federal University, Krasnoyarsk, 660041, Russian Federation)
  • Ryabov V.V. (Institute of Metallurgy, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620016, Russian Federation)

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