Electrocaloric effect in a ferroelectric Pb(Zn1/3Nb2/3)O3-PbTiO3 single crystal

Matjaz Valant, Lawrence J. Dunne, Anna-Karin Axelsson, Neil McN. Alford, George Manos, Jani Peräntie, Juha Hagberg, Heli Jantunen, and Antoni Dabkowski
Phys. Rev. B 81, 214110 – Published 14 June 2010
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  • INTRODUCTION
  • EXPERIMENTAL PROCEDURE
  • EXPERIMENTAL RESULTS
  • DISCUSSION
  • CONCLUSIONS
    • References

    Abstract

    The electrocaloric effect in a 0.92Pb(Zn1/3Nb2/3)O3−0.08PbTiO3 single crystal was measured by a direct calorimetric technique as a function of sample temperature and electric field. The temperature of the maximum electrocaloric effect was found to coincide with the ferroelectric transition temperature. We present a theoretical description based on mean-field theory that gives a satisfactory description of the temperature and electric field dependence of the experimentally observed electrocaloric effect.

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    • Received 9 April 2010

    DOI:https://doi.org/10.1103/PhysRevB.81.214110

    ©2010 American Physical Society

    Authors & Affiliations

    Matjaz Valant1, Lawrence J. Dunne2,3, Anna-Karin Axelsson3, Neil McN. Alford3, George Manos4, Jani Peräntie5, Juha Hagberg5, Heli Jantunen5, and Antoni Dabkowski6

    • 1Materials Research Laboratory, University of Nova Gorica, Nova Gorica 5000, Slovenia
    • 2Department of Engineering Systems, London South Bank University, London SE1 OAA, United Kingdom
    • 3Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom
    • 4Department of Chemical Engineering, University College London, London WC1E 7JE, United Kingdom
    • 5Microelectronics and Materials Physics Laboratories, University of Oulu, Oulu 90014, Finland
    • 6Brockhouse Institute for Materials Research, McMaster University, Hamilton, Ontario, Canada L8S 4M1

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    Issue

    Vol. 81, Iss. 21 — 1 June 2010

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