Electrocaloric effect in ferroelectric polymers

被引：44
作者：
Lu, S. G. [1 ,2 ]
Rozic, B. [3 ]
Zhang, Q. M. [1 ,2 ]
Kutnjak, Z. [3 ]
Pirc, R. [3 ]
机构：
[1] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA
[2] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA
[3] Jozef Stefan Inst, Ljubljana 1000, Slovenia
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2012年 / 107卷 / 03期
关键词：
TRANSVERSE STRAIN RESPONSES; VINYLIDENE FLUORIDE; PHASE-TRANSITION; CO-POLYMER; ELECTROSTRICTION; PYROELECTRICITY; FILMS;
D O I：
10.1007/s00339-012-6830-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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 Delta under a given electric field peaks at the ferroelectric-paraelectric (FE-PE) transition. Away from it, ECE becomes small. Delta 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.
引用
收藏
页码：559 / 566
页数：8
相关论文
共 50 条
  • [31] Mitsui T., 1976, An Introduction to the Physics of Ferroelectrics
  • [32] Large electrocaloric effect in ferroelectric polymers near room temperature
    Neese, Bret
    Chu, Baojin
    Lu, Sheng-Guo
    Wang, Yong
    Furman, E.
    Zhang, Q. M.
    [J]. SCIENCE, 2008, 321 (5890) : 821 - 823
  • [33] Electrocaloric effect of the relaxor ferroelectric poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) terpolymer
    Neese, Bret
    Lu, S. G.
    Chu, Baojin
    Zhang, Q. M.
    [J]. APPLIED PHYSICS LETTERS, 2009, 94 (04)
  • [34] Newnham R E., 2005, Properties of materials: anisotropy, symmetry, structure
  • [35] PRIMARY AND SECONDARY PYROELECTRICITY IN HIGHLY ORIENTED POLYVINYLIDENE FLUORIDE
    NIX, EL
    NANAYAKKARA, J
    DAVIES, GR
    WARD, IM
    [J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1988, 26 (01) : 127 - 140
  • [36] Massive magnetic-field-induced structural transformation in Gd5Ge4 and the nature of the giant magnetocaloric effect -: art. no. 197204
    Pecharsky, VK
    Holm, AP
    Gschneidner, KA
    Rink, R
    [J]. PHYSICAL REVIEW LETTERS, 2003, 91 (19)
  • [37] Effect of misfit strain on the electrocaloric effect in epitaxial SrTiO3 thin films
    Qiu, J. H.
    Jiang, Q.
    [J]. EUROPEAN PHYSICAL JOURNAL B, 2009, 71 (01) : 15 - 19
  • [38] Roic B., 2010, FERROELECTRICS, V405, P26
  • [39] Electrocaloric effect of PMN-PT thin films near morphotropic phase boundary
    Saranya, D.
    Chaudhuri, Ayan Roy
    Parui, Jayanta
    Krupanidhi, S. B.
    [J]. BULLETIN OF MATERIALS SCIENCE, 2009, 32 (03) : 259 - 262
  • [40] Analysis of the efficiency of an electrocaloric cryorefrigerator
    Sinyavskii, YV
    [J]. CHEMICAL AND PETROLEUM ENGINEERING, 1995, 31 (9-10) : 501 - 506
12345