학술논문
High-temperature heat capacity and vibrational spectra of EuSnO.
Document Type
Article
Author
Source
Subject
*HEAT capacity
*VIBRATIONAL spectra
*SOLID state chemistry
*DIFFERENTIAL scanning calorimetry
*TIN oxides
*EUROPIUM
*RAMAN spectra
*POLYCRYSTALS
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Language
ISSN
0020-1685
Abstract
The EuSnO compound has been prepared by solid-state reaction (by sequentially firing a stoichiometric mixture of EuO and SnO in air at 1273 and 1473 K) and its heat capacity has been determined by differential scanning calorimetry in the temperature range 370-1000 K. The heat capacity data have been used to evaluate the thermodynamic properties of europium stannate: enthalpy increment H°( T)- H°(370 K), entropy change S°( T)- S°(370 K), and reduced Gibbs energy Ф°( T). Raman spectra of EuSnO polycrystals with the pyrochlore structure have been measured in the range 200-1200 cm. [ABSTRACT FROM AUTHOR]