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High-Temperature Heat Capacity and Thermodynamic Properties of HoBiGeO5 and ErBiGeO5.
- Source :
- Inorganic Materials; Sep2018, Vol. 54 Issue 9, p920-924, 5p
- Publication Year :
- 2018
-
Abstract
- Polycrystalline HoBiGeO<subscript>5</subscript> and ErBiGeO<subscript>5</subscript> samples have been prepared by solid-state reactions, by firing stoichiometric mixtures of Ho<subscript>2</subscript>O<subscript>3</subscript> (Er<subscript>2</subscript>O<subscript>3</subscript>), Bi<subscript>2</subscript>O<subscript>3</subscript>, and GeO<subscript>2</subscript>. The effect of temperature on the heat capacity of the synthesized compounds has been investigated by differential scanning calorimetry in the range 350-1000 K. The experimental C<subscript>p</subscript>(T) data have been used to evaluate the thermodynamic functions of bismuth holmium and bismuth erbium germanates: enthalpy increment, entropy change, and reduced Gibbs energy. [ABSTRACT FROM AUTHOR]
- Subjects :
- THERMODYNAMICS
BISMUTH
CRYSTALLIZATION
HEAT transfer
X-ray diffraction
Subjects
Details
- Language :
- English
- ISSN :
- 00201685
- Volume :
- 54
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Inorganic Materials
- Publication Type :
- Academic Journal
- Accession number :
- 131577515
- Full Text :
- https://doi.org/10.1134/S0020168518090029