Electrocaloric response of the ferroelectrics

Akcay, G. and Alpay, S. P. and Mantese, J. V. and Rossetti, G. A. and Scott, J. F. (2008) Electrocaloric response of the ferroelectrics. In: Applications of Ferroelectrics, 2008. ISAF 2008. 17th IEEE International Symposium on the.

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Monodomain contributions to the electrocaloric effect in mechanically free (bulk) and laterally strained (thin film) BaTiO3 are computed using a thermodynamic analysis. We show that the intrinsic electrocaloric coefficient at electric fields sufficient to destroy the discontinuous ferroelectric phase transition results in an adiabatic temperature change of 8 K that agrees closely with the giant value of 12 K recently observed experimentally for lead zirconate titanate thin films [Science 311, 1270 (2006)]. It is also demonstrated that the magnitude, the temperature-dependence and the maxima temperature (where the effect is maximum) of the electrocaloric response can be modified as a function of misfit strain.

Item Type: Conference or Workshop Item (Paper)
Subjects: 03 - Mineral Sciences
Divisions: 03 - Mineral Sciences
Volume: 2
Page Range: pp. 1-4
Depositing User: Sarah Humbert
Date Deposited: 30 May 2009 12:03
Last Modified: 23 Jul 2013 09:55
URI: http://eprints.esc.cam.ac.uk/id/eprint/1041

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