Polarization rotation and the electrocaloric effect in barium titanate

Abstract

We study the electrocaloric effect in the classic ferroelectric BaTiO3 through a series of phase transitions driven by applied electric field and temperature. We find both negative and positive electrocaloric effects, with the negative electrocaloric effect, where temperature decreases with applied field, in monoclinic phases. Macroscopic polarization rotation is evident through the monoclinic and orthorhombic phases under applied field, and is responsible for the negative electrocaloric effect.

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Cited by in corpus (4)

• Ultra-fast electric field control of giant electrocaloric effect in ferroelectrics
• Giant electrocaloric effect at the antiferroelectric-to-ferroelectric phase boundary in PbZrTiO${}_3$
• Tailoring the electrocaloric effect by internal bias fields and field protocols
• Electric field direction dependence of the electrocaloric effect in BaTiO3