High-temperature heat capacity and heat content of CaCu3Ti4O12 (CCTO)

Jacob, KT and Rajitha, G and Kale, GM and Watson, A and Wang, Z (2009) High-temperature heat capacity and heat content of CaCu3Ti4O12 (CCTO). In: Journal of Alloys and Compounds, 488 (1). pp. 35-38.

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Abstract

The isobaric heat capacity of CaCu3Ti4O12 (CCTO) was measured from 300 to 1100 K using differential scanning calorimetry (DSC). The results were verified using drop calorimetric measurement of enthalpy increment (H-T - H-298.15) at T= 973 and 1073 K. The samples were dropped from room temperature into a calorimeter maintained at high temperature. The results show small negative deviation from Neumann-Kopp rule. The enthalpy and entropy increments are computed as a function of temperature and compared with values available in the literature. The results obtained in this study are consistent with available information on enthalpy and Gibbs energy of formation of CCTO.

Item Type:	Journal Article
Publication:	Journal of Alloys and Compounds
Publisher:	Elsevier science
Additional Information:	Copyright for this article belongs to Elsevier science.
Keywords:	Thermodynamic properties; Heat capacity; Enthalpy content; Neumann-Kopp rule
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	09 Feb 2010 11:29
Last Modified:	19 Sep 2010 05:54
URI:	http://eprints.iisc.ac.in/id/eprint/25520

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