Abstract

Mukhametkali Musagalievich Matayev¹, Moldir Rashidovna Abdraimova¹, Zhanar Yliasovna Tursinova¹ and Assel Taupykovna Kezdikbaeva²

DOI : http://dx.doi.org/10.13005/ojc/330666

The compound BiCa₃Fe₅O₁₂ was synthesized by the solid-phase reaction method. For the first time, the thermodynamic properties were calculated using semiempirical methods: Standard enthalpy of formation, Н⁰298,Standard heat capacity, С⁰_Р, 298,Standard Gibbs energy, G⁰298andStandard entropy of formation, S⁰298, coefficients in the equation of the temperature dependence of the heat capacityCp(T). The temperature dependence of the specific heat was studied by dynamic calorimeter. Thus, in the temperature interval 298.15-673 K, the specific heats of the complex ferrite BiCa₃Fe₅O₁₂ were experimentally determined, and the polynomial equation of the temperature dependence of the heat capacity was derived.The comparative analysis of the experimental and calculated values of the specific heat wascarried out.

Oxides; Ferrites; Heat Capacity; Calorimeter

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