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Synthesis, Crystal Structure, and Thermodynamic Properties of the CaSm2Ge3O10 Germanate in the Range 320–1000 K.
- Source :
- Inorganic Materials; Jan2023, Vol. 59 Issue 1, p93-97, 5p
- Publication Year :
- 2023
-
Abstract
- The CaSm<subscript>2</subscript>Ge<subscript>3</subscript>O<subscript>10</subscript> germanate has been prepared by firing stoichiometric mixtures of CaCO<subscript>3</subscript>, Sm<subscript>2</subscript>O<subscript>3</subscript>, and GeO<subscript>2</subscript> in air in the temperature range 1423–1473 K. X-ray powder diffraction characterization with the use of the derivative difference minimization method has shown that CaSm<subscript>2</subscript>Ge<subscript>3</subscript>O<subscript>10</subscript> has a monoclinic structure (sp. gr. P2<subscript>1</subscript>/c, 293 К) with unit-cell parameters a = 6.9779(8) Å, b = 6.92859(7) Å, c = 18.8907(2) Å, and β = 108.3280(8)°. The high-temperature heat capacity of calcium samarium germanate samples has been determined in the temperature range 320–1000 K by differential scanning calorimetry and the experimental C<subscript>p</subscript>(T) data have been used to evaluate thermodynamic properties of CaSm<subscript>2</subscript>Ge<subscript>3</subscript>O<subscript>10</subscript>. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00201685
- Volume :
- 59
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Inorganic Materials
- Publication Type :
- Academic Journal
- Accession number :
- 173805028
- Full Text :
- https://doi.org/10.1134/S0020168523010065