Enhanced electrocaloric effect in ferroelectric poly(vinylidene-fluoride/ trifluoroethylene) 55/45 mol % copolymer at ferroelectric-paraelectric transition

S. G. Lu, B. Rožič, Q. M. Zhang, Z. Kutnjak, Bret Neese

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    97 Scopus citations

    Abstract

    The electrocaloric effect (ECE) of the ferroelectric poly(vinylidene- fluoride/trifluoroethylene) 55/45 mol % copolymer was directly measured over a broad temperature range using a specially designed calorimetry method. The data reveal a large ECE occurring at the ferroelectric-paraelectric (FE-PE) phase transition where an adiabatic temperature change ∼12 °C was induced under a field of 120 MV/m, which is much higher than that previously observed at above the FE-PE transition. The directly measured ECE also confirms the earlier results deduced from the indirect method. The experimental data also show that there are secondary effects contributing to the observed ECE in the polymer.

    Original languageEnglish (US)
    Article number122906
    JournalApplied Physics Letters
    Volume98
    Issue number12
    DOIs
    StatePublished - Mar 21 2011

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)

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