Доклады Академии наукДоклады Академии наук0869-5652The Russian Academy of Sciences1342710.31857/S0869-56524862193-196Research ArticleHigh-temperature heat capacity ErInGe2O7 and TbInGe2O7 in the range 350-1000 KDenisovaL. T.antluba@mail.ruIzotovA. D.<p>Corresponding Member of the Russian Academy of Sciences</p>antluba@mail.ruKarginYu. F.antluba@mail.ruIrtugoL. A.antluba@mail.ruBeletskiyV. V.antluba@mail.ruBelousovaN. V.antluba@mail.ruDenisovV. M.antluba@mail.ruSiberian Federal UniversityKurnakov Institute of General and Inorganic Chemistry of the Russian Academy of SciencesBaikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences2705201948621931961406201914062019Copyright © 2019, Russian academy of sciences2019<p>SmFeGe<sub>2</sub>O<sub>7</sub> germanate was obtained by solid-state reactions from stoichiometric mixtures of starting oxides with multistage firing within 1273-1473 K. The effect of temperature on the heat capacity of the compound was studied using differential scanning calorimetry. Based on the dependence <em>C<sub>p</sub></em> = <em>f</em>(T), its thermodynamic properties are calculated.</p>erbium indium germanatedifferential scanning calorimetryterbium indium germanatehigh-temperature heat capacitythermodynamic propertiesгерманаты эрбия-индия и тербия-индиядифференциальная сканирующая калориметриявысокотемпературная теплоёмкостьтермодинамические свойства[Juarez-Arellano E.A., Bucio L., Hernandez J. A., et al. // J. Solid State Chem. 2003. V. 170. P. 418-423.][Juarez-Arellano E.A., Campa-Molina J., Ulloa-Godinez S., et al. //Mater. Res. Soc. Symp. Proc. 2005. V. 848. P. FF6.15.1-FF6.15.8.][Chang Y.-S., Lin H-J., Chai Y.-L., et al. // J. Alloys Compd. 2008. V. 460. P. 421-425.][Becker U.W., Felsche J. // J. Less-Common. Metals. 1987. V. 128. P. 269-280.][Solovyov L.A. // J. Appl. Crystallogr. 2004. V. 37. P. 743-749.][Денисов В.М., Денисова Л. Т., Иртюго Л. А. и др. // ФТТ. 2010. Т. 52. № 7. С. 1274-1277.][Денисова Л.Т., Иртюго Л. А., Каргин Ю. Ф. и др. // Неорган. материалы. 2017. Т. 53. № 1. С. 71.][Петьков В.И., Асабина Е. А., Суханов М.В. и др. // ЖФХ. 2013. Т. 87. № 12. С. 2000-2008.]