Structural Characteristics, Heat Capacity, and Thermal Expansion of BiFe2(PO4)3статья
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Дата последнего поиска статьи во внешних источниках: 1 апреля 2022 г.
Аннотация:Polycrystals of BiFe2(PO4)3 compound have
been synthesized by evaporation of the salt solution followed by heat treatment. The morphological and elemental analyses of the
sample were carried out by energy-dispersive X-ray spectroscopy. According to the XRD data, the compound belongs to the hexagonal system with the space group P6(3)/m. Using the adiabatic and differential scanning calorimetric methods, the heat capacity of
the sample was measured in the temperature range between 5 and 660 K, and the thermodynamic functions were determined in the
range from T → 0 to T = 660 K. On the heat capacity curve of the sample in the temperature region between 12 and 32 K, an anomaly was detected. Thermal expansion coefficients of the
compound were determined with the use of thermal X-ray diffraction analysis.