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JOURNALS // Fizika Tverdogo Tela // Archive

Fizika Tverdogo Tela, 2023 Volume 65, Issue 9, Pages 1515–1518 (Mi ftt10803)

Semiconductors

High-temperature heat capacity of Li, Sc-germanate LiScGeO$_4$ and Li, Sc-silicate LiScSiO$_4$

L. A. Irtyugo, L. T. Denisova, G. V. Vasil'ev, V. M. Denisov

Siberian Federal University, Krasnoyarsk, Russia

Abstract: LiScGeO$_4$ and LiScSiO$_4$ compounds were obtained by solid-phase synthesis from Li$_2$CO$_3$, Sc$_2$O$_3$, GeO$_2$ (SiO$_2$). Their crystal structure has been refined using X-ray diffraction. The high-temperature heat capacity (320–1050 K) of the obtained lithium-scandium germanate and silicate was measured by differential scanning calorimetry. The thermodynamic properties were calculated based on the experimental data about heat capacity. Keywords: differential scanning calorimetry, solid-phase synthesis, thermodynamic properties.

Keywords: differential scanning calorimetry, solid-phase synthesis, thermodynamic properties.

Received: 15.07.2023
Revised: 15.07.2023
Accepted: 16.07.2023

DOI: 10.21883/FTT.2023.09.56246.152



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