Thermodynamic investigation of the Ruddlesden-Popper phase Sr3Fe2O7

A.V. Knyazev, Yu.V. Alekseeva,N.N. Smirnova, O.V. Krasheninnikova,A.V. Markin,E.V. Syrov,E.V. Elipasheva, L.V. Smirnova

The Journal of Chemical Thermodynamics（2020）

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摘要

•The temperature dependence of heat capacity of Sr3Fe2O7 has been measured.•The experimental data were used to calculate standard thermodynamic functions.•The phase transitions of the compound were studied by means of X-ray diffraction and DSC.•The mechanisms of the phase transitions at 120 K and 366 K are suggested.

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关键词

Layered perovskite,Ruddlesden-Popper phase,Adiabatic vacuum calorimetry,Heat capacity,Phase transition,Thermodynamic functions

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