This article is cited in 9 papers

Dielectrics

Investigation of the thermal expansion and heat capacity of the CaCu$_3$Ti$_4$O$_{12}$ ceramics

M. V. Gorev^ab, I. N. Flerov^ab, A. V. Kartashev^a, S. Guillement-Fritsch<sup>c

a</sup> L. V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk
^b Institute of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk
^c Institute Carnot CIRIMAT CNRS/UPS/INP, Université de Toulouse, Toulouse, France

Abstract: The thermal expansion of the CaCu$_3$Ti$_4$O$_{12}$ ceramics has been measured over a wide temperature range 120–1200 K. The high quality of the samples under study has been confirmed by good agreement of the results of measurements of the heat capacity in the range 2–300 K and in the vicinity of the phase transition of magnetic nature at 25 K with the data for the single crystal. No anomalies in the thermal expansion that can be associated with the phase transition at 726–732 K assumed by other investigators have been found. The influence exerted on the thermal expansion by the heat treatment of the sample in a helium atmosphere and in air has been investigated.

Received: 14.03.2012

 English version: Physics of the Solid State, 2012, 54:9, 1785–1789

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