Тип публикации: статья из журнала

Год издания: 2024

Идентификатор DOI: 10.1134/S0020168524700912

Ключевые слова: solid-state synthesis, calcium scandium germanate, heat capacity, thermodynamic properties

Аннотация: The calcium strontium germanate Ca₃Sc₂Ge₃O₁₂ has been prepared by solid-state reaction, by firing a stoichiometric mixture of CaO, Sc₂O₃, and GeO₂ in air at temperatures from 1273 to 1623 K. Using X-ray diffraction data for single-phase samples, we have determined the unit-cell parameter of Ca₃Sc₂Ge₃O₁₂ crystals (garnet structure, sp. gr. <i>Ia</i>$\bar {3}$<i>d</i>, <i>a</i> = 12.508(48) Å, <i>V</i> = 1956.92(2) ų). The heat capacity of polycrystalline samples has been determined in the range 320–1050 K using differential scanning calorimetry. The results have been used to calculate thermodynamic functions of the calcium strontium germanate.

Журнал: Inorganic Materials

Выпуск журнала: Т. 60, № 6

Номера страниц: 703-707

ISSN журнала: 00201685

Место издания: Moscow

Издатель: Pleiades Publishing, Ltd.

• Denisova L. T. (Siberian Federal University)
• Chumilina L. G. (Siberian Federal University)
• Kargin Yu. F. (Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences)
• Vasil'Ev G. V. (Siberian Federal University)
• Beletskii V. V. (Siberian Federal University)
• Denisov V. M. (Siberian Federal University)

• Ядро РИНЦ (eLIBRARY.RU)