| Issue |
EPL
Volume 103, Number 4, August 2013
|
|
|---|---|---|
| Article Number | 47001 | |
| Number of page(s) | 5 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/103/47001 | |
| Published online | 02 September 2013 | |
High-resolution electrocaloric and heat capacity measurements in barium titanate
1 Jožef Stefan Institute - Jamova 39, 1000 Ljubljana, Slovenia, EU
2 Jožef Stefan International Postgraduate School - Jamova 39, 1000 Ljubljana, Slovenia, EU
Received: 14 August 2013
Accepted: 21 August 2013
The electrocaloric (EC) effect in a BaTiO3 single crystal oriented along the [001] direction has been studied by direct high-resolution EC measurements in the vicinity of the field-induced critical point. It is shown that the observed behavior of the EC temperature change 
, as well as the heat capacity anomalies are in good agreement with the predictions of the Landau theory. We also present the electric field-temperature phase diagram for the field-induced paraelectric-to-ferroelectric phase transition line, derived from the calculated latent heat.
PACS: 77.70.+a – Pyroelectric and electrocaloric effects / 05.70.Jk – Critical point phenomena / 65.40.Ba – Heat capacity
© EPLA, 2013
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