Heat capacity of rare-earth stannates in the range 350–1000 K

R 2 Sn 2 O 7 (R = Pr–Lu) rare-earth stannates with the pyrochlore structure have been synthesized by solid-state reactions, by firing stoichiometric mixtures of SnO 2 and R 2 O 3 in air at 1473 K. The high-temperature heat capacity of the rare-earth stannates has been determined by differential scan...

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Bibliographic Details
Published in:Inorganic materials 2017-09, Vol.53 (9), p.956-961
Main Authors: Denisova, L. T., Kargin, Yu. F., Denisov, V. M.
Format: Article
Language:English
Subjects:
Chemical synthesis
Chemistry
Chemistry and Materials Science
Differential scanning calorimetry
Heat measurement
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
Raman spectra
Rare earth elements
Specific heat
Stannates
Tin dioxide
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Summary:R 2 Sn 2 O 7 (R = Pr–Lu) rare-earth stannates with the pyrochlore structure have been synthesized by solid-state reactions, by firing stoichiometric mixtures of SnO 2 and R 2 O 3 in air at 1473 K. The high-temperature heat capacity of the rare-earth stannates has been determined by differential scanning calorimetry in the temperature range 350 to 1000 K, and the Raman spectra of polycrystalline Tb 2 Sn 2 O 7 and Dy 2 Sn 2 O 7 samples have been measured.
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168517090059