Synthesis and Thermodynamic Properties of the Ca3Sc2Ge3O12 Germanate

IF 0.9 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Inorganic Materials Pub Date : 2025-03-10 DOI:10.1134/S0020168524700912

L. T. Denisova, L. G. Chumilina, Yu. F. Kargin, G. V. Vasil’ev, V. V. Beletskii, V. M. Denisov

引用次数: 0

Abstract

The calcium strontium germanate Ca₃Sc₂Ge₃O₁₂ has been prepared by solid-state reaction, by firing a stoichiometric mixture of CaO, Sc₂O₃, and GeO₂ in air at temperatures from 1273 to 1623 K. Using X-ray diffraction data for single-phase samples, we have determined the unit-cell parameter of Ca₃Sc₂Ge₃O₁₂ crystals (garnet structure, sp. gr. Ia\(\bar {3}\)d, a = 12.508(48) Å, V = 1956.92(2) Å³). The heat capacity of polycrystalline samples has been determined in the range 320–1050 K using differential scanning calorimetry. The results have been used to calculate thermodynamic functions of the calcium strontium germanate.

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来源期刊

Inorganic Materials 工程技术-材料科学：综合

CiteScore

1.40

自引率

25.00%

发文量

审稿时长

3-6 weeks

期刊介绍： Inorganic Materials is a journal that publishes reviews and original articles devoted to chemistry, physics, and applications of various inorganic materials including high-purity substances and materials. The journal discusses phase equilibria, including P–T–X diagrams, and the fundamentals of inorganic materials science, which determines preparatory conditions for compounds of various compositions with specified deviations from stoichiometry. Inorganic Materials is a multidisciplinary journal covering all classes of inorganic materials. The journal welcomes manuscripts from all countries in the English or Russian language.