Synthesis and High-Temperature Heat Capacity of LaMgAl11O19 and SmMgAl11O19 Hexaaluminates

P. G. Gagarin; Гагарин П. Г.; A. V. Guskov; Гуськов А. В.; V. N. Guskov; Гуськов В. Н.; A. V. Khoroshilov; Хорошилов А. В.; M. A. Ryumin; Рюмин М. А.; K. S. Gavrichev; Гавричев К. С.

doi:10.31857/S0044457X23601062

Synthesis and High-Temperature Heat Capacity of LaMgAl11O19 and SmMgAl11O19 Hexaaluminates

Authors: Gagarin P.G.¹, Guskov A.V.¹, Guskov V.N.¹, Khoroshilov A.V.¹, Ryumin M.A.¹, Gavrichev K.S.¹
Affiliations:
1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences
Issue: Vol 68, No 11 (2023)
Pages: 1607-1613
Section: ФИЗИЧЕСКИЕ МЕТОДЫ ИССЛЕДОВАНИЯ
URL: https://ruspoj.com/0044-457X/article/view/666147
DOI: https://doi.org/10.31857/S0044457X23601062
EDN: https://elibrary.ru/EMEVDU
ID: 666147

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Abstract

The processes occurring during heating of a stoichiometric mixture of lanthanum, samarium, magnesium, and aluminum hydroxides synthesized by the reverse precipitation method have been studied by DTA/TG and X-ray powder diffraction methods. The conditions for the synthesis of single-phase LaMgAl11O19 and SmMgAl11O19 samples of the magnetoplumbite structure type have been determined, and the isobaric heat capacity has been measured in the temperature range 317–1817 K, showing the absence of structural transformations in this range.

Keywords

magnetoplumbite, isobaric heat capacity

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