Electrocaloric properties in relaxor ferroelectric (1−x)Pb(Mg1/3Nb2/3)O3–xPbTiO3 system | Zendy

Jani Peräntie | Zendy; Hamel N. Tailor | Zendy; J. Hagberg | Zendy; Heli Jantunen | Zendy; ZuoGuang Ye | Zendy

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Electrocaloric properties in relaxor ferroelectric (1−x)Pb(Mg1/3Nb2/3)O3–xPbTiO3 system

Author(s) -

Jani Peräntie,

Hamel N. Tailor,

J. Hagberg,

Heli Jantunen,

ZuoGuang Ye

Publication year - 2013

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.4829012

Subject(s) - electrocaloric effect , materials science , pyroelectricity , curie temperature , ferroelectricity , condensed matter physics , electric field , atmospheric temperature range , relaxor ferroelectric , columbite , dielectric , phase transition , ferroelectric ceramics , analytical chemistry (journal) , thermodynamics , ferromagnetism , chemistry , physics , optoelectronics , chromatography , quantum mechanics

The electrocaloric effect (ECE) in the Pb(Mg1/3Nb2/3)O3–PbTiO3 (PMN-PT) solid solution system was investigated by means of detailed direct temperature measurements as a function of temperature, composition, and electric field. The (1−x)PMN-xPT ceramics of compositions 0 ≤ x ≤ 0.3 were fabricated by the columbite route. In opposite to conventional ferroelectrics, the maximum of electrocaloric effect was found to shift from the proximity of depolarization/Curie temperature to higher temperatures above a certain composition-dependent electric field strengths. Especially, the compositions with low PT content showed a broadened temperature range of electrocaloric effect. With increasing PbTiO3 concentration, the magnitude of ΔT increased, and the temperature dependence of the maximum ECE response gradually developed towards a more pronounced anomaly typical for conventional ferroelectrics. The arising high temperature electrocaloric effect in the ergodic relaxor phase was attributed to the contribution from po...

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