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Thermodynamic Properties of FeNb2O6 and FeTa2O6

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Abstract

Empirical calculational approaches have been used to evaluate the enthalpy, entropy, heat capacity, and melting point of iron(II) niobate and iron(II) tantalate and the coefficients A, B, and C in an equation for the temperature dependence of their heat capacity. The melting point of FeTa2O6 has been experimentally determined to be 1891 ± 5 K. The calculated heat capacity (C°p (298.15 K)) of iron tantalate and the Gibbs energies of formation of FeN2O6 and FeTa2O6 have been compared to previously reported data.

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Authors and Affiliations

  1. Institute of Metallurgy, Ural Branch, Russian Academy of Sciences, ul. Amundsena 101, Yekaterinburg, 620016, Russia

    A. N. Mansurova, V. M. Chumarev & R. I. Gulyaeva

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  1. A. N. Mansurova
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  2. V. M. Chumarev
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  3. R. I. Gulyaeva
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Correspondence to V. M. Chumarev.

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Original Russian Text © A.N. Mansurova, V.M. Chumarev, R.I. Gulyaeva, 2018, published in Neorganicheskie Materialy, 2018, Vol. 54, No. 7, pp. 738–743.

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Mansurova, A.N., Chumarev, V.M. & Gulyaeva, R.I. Thermodynamic Properties of FeNb2O6 and FeTa2O6. Inorg Mater 54, 700–705 (2018). https://doi.org/10.1134/S0020168518070087

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  • DOI: https://doi.org/10.1134/S0020168518070087

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