Heat Capacity and Thermodynamic Properties of SmFeGe2O7 in the Range 350–1000 K
PHYSICAL CHEMISTRY
First Online:
Abstract
SmFeGe2O7 germanate has been synthesized by solid-state reactions from stoichiometric mixtures of starting oxides using multistage sintering in the temperature range 1273‒1473 K. The effect of temperature on the heat capacity of the compound has been studied by differential scanning calorimetry. On the basis of the dependence Cp = f(T), the thermodynamic properties of this compound have been calculated.
Notes
REFERENCES
- 1.Dem'yanets, L.N., Lobachev, A.N., and Emel’chen-ko, G.A., Germanaty redkozemel’nykh elementov (Rare Earth Germanates), Moscow: Nauka, 1980.Google Scholar
- 2.Cascales, C., Fernandez-Diaz, M.T., Monge, M.A., and Bucio, L., Chem. Mater., 2002, vol. 14, pp. 1885–2003.Google Scholar
- 3.Juarez-Arellano, E.A., Campa-Molina, J., Ulloa-Godinez, S., et al., Mater. Res. Soc. Symp. Proc., 2005, vol. 848, pp. FF6.15.1–FF6.15.8.Google Scholar
- 4.Mil', B.D., Kazei, Z.A., Reiman, S.I., et al., Vestn. Mosk. Univ., Ser. 3, Fiz. Astron., 1987, vol. 28, no. 4, pp. 95–98.Google Scholar
- 5.Bucio, L., Cascales, C., Alonso, J.A., and Rasines, I., J. Phys.: Condens. Matter, 1996, vol. 8, pp. 2641–2653.Google Scholar
- 6.Drokina, T.V., Petrakovskii, G.A., Velikanov, D.A., and Molokeev, M.S., Fiz. Tverd. Tela, 2014, vol. 56, no. 6, pp. 1088–1092.Google Scholar
- 7.Shtin, S.V. and Lykasov, A.A., Izv. Vyssh. Uchebn. Zaved., Tsvetn. Metall., 2013, no. 5, pp. 12–16.Google Scholar
- 8.Becker, U.W. and Felsche, J., J. Less-Common Met., 1987, vol. 128, pp. 269–280.CrossRefGoogle Scholar
- 9.Denisova, L.T., Izotov, A.D., and Kargin, Yu.F., Dokl. Phys. Chem., 2017, vol. 477, part 1, pp. 205–207.CrossRefGoogle Scholar
- 10.Denisova, L.T., Irtyugo, L.A., Kargin, Yu.F., et al., Neorg. Mater., 2017, vol. 53, no. 1, pp. 71–73.Google Scholar
- 11.Shannon, R.D., Acta Crystallogr. Sect. A, 1976, vol. 32, pp. 751–767.CrossRefGoogle Scholar
- 12.Denisova, L.T., Irtyugo, L.A., Kargin, Yu.F., et al., Neorg. Mater., 2018, vol. 54, no. 2, pp. 193–196.Google Scholar
- 13.Leitner, J., Chuchvalec, P., Sedmidysky, D., et al., Thermochim. Acta, 2003, vol. 295, pp. 27–46.Google Scholar
- 14.Kumok, V.N., in Pryamye i obratnye zadachi khimi-cheskoi termodinamiki (Direct and Inverse Problems of Chemical Thermodynamics), Novosibirsk: Nauka, 1987, pp. 108–123.Google Scholar
Copyright information
© Pleiades Publishing, Ltd. 2019