Denisova L. T.1, Belokopytova D. V.1, Vasilev G. V.1, Tinkova S. M.1, Denisov V. M.1
1Siberian Federal University, Krasnoyarsk, Russia
Email: ldenisova@sfu-kras.ru
According to the standard ceramic technology, CaEr2Ge4O12 germanate was obtained from the initial oxides of CaO, Er2O3 and GeO2 by sequential firing in air in the temperature range 1223-1423 K. Its crystal structure was determined using X-ray diffraction (e. g. P4/nbm; a=9.97390(8) Angstrem, b=5.06017(5) Angstrem, V=503.38(1) Angstrem3). The high-temperature heat capacity in the range 320-1050 K was measured by differential scanning calorimetry. Thermodynamic characteristics are calculated using experimental Cp(T) data. Keywords: calcium-erbium germanate, solid-phase synthesis, heat capacity, thermodynamic properties.
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