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Synthesis, Crystal Structure, and Thermodynamic Properties of CuSm2Ge2O8.
- Source :
- Russian Journal of Inorganic Chemistry; Dec2021, Vol. 66 Issue 12, p1817-1821, 5p
- Publication Year :
- 2021
-
Abstract
- Copper samarium germanate CuSm<subscript>2</subscript>Ge<subscript>2</subscript>O<subscript>8</subscript> have been synthesized by the ceramic method from CuO, Sm<subscript>2</subscript>O<subscript>3</subscript>, and GeO<subscript>2</subscript> in air at the final calcination temperature 1273 K (200 h), and its crystal structure has been determined (space group Cm; a = 9.7592(2) Å, b = 15.2608(4) Å, c = 8.2502(2) Å, β = 148.2566(8)°, V = 646.46(3) Å<superscript>3</superscript>). The temperature dependence of the molar heat capacity C<subscript>p</subscript>= f(T) measured in the temperature range 350–1000 K shows a maximum at T<subscript>max</subscript> = 498.5 K caused by the phase transition. Thermodynamic properties have been calculated from experimental data. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00360236
- Volume :
- 66
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Russian Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 154122196
- Full Text :
- https://doi.org/10.1134/S0036023621120020