Electrocaloric effect in ferroelectric polymers

S. G. Lu, B. Rozic, Q. M. Zhang, Z. Kutnjak, R. Pirc

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43 Scopus citations


The electrocaloric effect (ECE) of poly (vinyledene fluoride- trifluoroethylene) (P(VDF-TrFE)) 55/45 mol% copolymers was directly measured, which confirms the results deduced from Maxwell relation. The adiabatic temperature change δT under a given electric field peaks at the ferroelectric-paraelectric (FE-PE) transition. Away from it, ECE becomes small. δT versus applied electric field can be described well by a modified Belov- Goryaga equation. The ECE in ferroelectric polymers, especially near FE-PE transition where larger ECE is observed, are analyzed under different boundary conditions employing phenomenological theory and constitutive equations. The secondary pyroelectricity is found to play a significant role which enhances ECE in ferroelectric polymers.

Original languageEnglish (US)
Pages (from-to)559-566
Number of pages8
JournalApplied Physics A: Materials Science and Processing
Issue number3
StatePublished - Jun 2012

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)


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