High-Temperature Heat Capacity of Germanates Pr 2 Ge 2 O 7  and Nd 2 Ge 2 O 7  within 350–1000 K

L. T. Denisova; L. A. Irtyugo; V. V. Beletskii; N. V. Belousova; V. M. Denisov

doi:10.1134/S1063783418030071

High-Temperature Heat Capacity of Germanates Pr₂Ge₂O₇ and Nd₂Ge₂O₇ within 350–1000 K

Authors: Denisova L.T.¹, Irtyugo L.A.¹, Beletskii V.V.¹, Belousova N.V.¹, Denisov V.M.¹
Affiliations:
1. Institute of Nonferrous Metals and Material Science
Issue: Vol 60, No 3 (2018)
Pages: 626-630
Section: Thermal Properties
URL: https://journal-vniispk.ru/1063-7834/article/view/202445
DOI: https://doi.org/10.1134/S1063783418030071
ID: 202445

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Abstract

Pr2Ge2O7 and Nd2Ge2O7 were obtained via solid-phase synthesis from Pr2O3 (Nd2O3) and GeO2 with multistage firing in air within 1273–1473 K. A temperature effect on molar heat capacity of the oxide compounds was measured with a differential scanning calorimetry. Their thermodynamic properties were calculated from the C_P = f(T) dependences.