Electrocaloric effect in ferroelectric polymers

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

doi:10.1007/s00339-012-6830-9

Electrocaloric effect in ferroelectric polymers

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

Electrical Engineering

Research output: Contribution to journal › Article › peer-review

47 Scopus citations

Abstract

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 language	English (US)
Pages (from-to)	559-566
Number of pages	8
Journal	Applied Physics A: Materials Science and Processing
Volume	107
Issue number	3
DOIs	https://doi.org/10.1007/s00339-012-6830-9
State	Published - Jun 2012

All Science Journal Classification (ASJC) codes

General Chemistry
General Materials Science

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10.1007/s00339-012-6830-9

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@article{928b81f0928d4432b538fbeb0adf302c,

title = "Electrocaloric effect in ferroelectric polymers",

abstract = "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.",

author = "Lu, {S. G.} and B. Rozic and Zhang, {Q. M.} and Z. Kutnjak and R. Pirc",

note = "Funding Information: The authors want to dedicate this article to Professor Reimund Gerhard at the occasion of his 60th birthday. S.G.L. thanks E. Furman for stimulating discussions. Research at The Pennsylvania State University was supported by the US DoE, Office of Basic Energy Sciences, Division of Materials Science and Engineering under Award No. DE-FG02-07ER46410. Research at JSI was supported by the Slovenian Research Agency under grants P1-0125, P2-0105, and J1-2015.",

year = "2012",

month = jun,

doi = "10.1007/s00339-012-6830-9",

language = "English (US)",

volume = "107",

pages = "559--566",

journal = "Applied Physics A: Materials Science and Processing",

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T1 - Electrocaloric effect in ferroelectric polymers

AU - Lu, S. G.

AU - Rozic, B.

AU - Zhang, Q. M.

AU - Kutnjak, Z.

AU - Pirc, R.

N1 - Funding Information: The authors want to dedicate this article to Professor Reimund Gerhard at the occasion of his 60th birthday. S.G.L. thanks E. Furman for stimulating discussions. Research at The Pennsylvania State University was supported by the US DoE, Office of Basic Energy Sciences, Division of Materials Science and Engineering under Award No. DE-FG02-07ER46410. Research at JSI was supported by the Slovenian Research Agency under grants P1-0125, P2-0105, and J1-2015.

PY - 2012/6

Y1 - 2012/6

N2 - 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.

AB - 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.

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JO - Applied Physics A: Materials Science and Processing

JF - Applied Physics A: Materials Science and Processing

IS - 3

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Electrocaloric effect in ferroelectric polymers

Abstract

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