Journal
PHYSICS OF THE SOLID STATE
Volume 54, Issue 9, Pages 1785-1789Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S1063783412090120
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Funding
- Council on Grants from the Russian Federation for Support of Leading Scientific Schools of the Russian Federation [NSh-4828.2012.2]
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The thermal expansion of the CaCu3Ti4O12 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.
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