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Assessment of thermodynamic data for CuCrO2 delafossite from calorimetric measurements

Schorne-Pinto, Juliano and Janghorban, Amin and Lomello-Tafin, Marc and Pisch, Alexander and Mikaelian, Georges and Benigni, Pierre and Barnabé, Antoine and Cassayre, Laurent Assessment of thermodynamic data for CuCrO2 delafossite from calorimetric measurements. (2019) Thermochimica Acta, 680. 178345. ISSN 0040-6031

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Official URL: https://doi.org/10.1016/j.tca.2019.178345

Abstract

A detailed investigation of the thermodynamic properties of delafossite CuCrO2 was carried out by experimental methods on synthetic CuCrO2 delafossite samples (differential scanning calorimetry from ambient to 871 K and drop calorimetry from 823 to 1123 K) and theoretical methods (density functional theory). Based on these data and available literature (low temperature heat capacity measurements and calculations, high temperature emf data), we propose, for the first time, a full set of thermodynamic data for the phase CuCrO2. Our selection comes to: ΔfH°298(CuCrO2) = −670.8 ± 1.3 kJ mol−1, S°298(CuCrO2) = 88.9 J K−1, and cp°(T)=1.02564.102-2.87159.107 T-3-1.28542.105 T-1.5 (298 < T < 1300 K).

Item Type:Article
HAL Id:hal-02285408
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Aix-Marseille Université - AMU (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Institut polytechnique de Grenoble (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Université du Sud Toulon-Var - USTV (FRANCE)
Other partners > Université de Savoie Mont Blanc - USMB (FRANCE)
Laboratory name:
Funders:
GDR CNRS
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Deposited By: Loetitia MOYA
Deposited On:12 Sep 2019 14:41

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