Impact of phase transition sequence on the electrocaloric effect in Pb(Nb,Zr,Sn,Ti)O3 ceramics | Zendy

Zunping Xu | Zendy; Zhongming Fan | Zendy; Xiaoming Liu | Zendy; Xiaoli Tan | Zendy

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Impact of phase transition sequence on the electrocaloric effect in Pb(Nb,Zr,Sn,Ti)O3 ceramics

Author(s) -

Zunping Xu,

Zhongming Fan,

Xiaoming Liu,

Xiaoli Tan

Publication year - 2017

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4976827

Subject(s) - antiferroelectricity , ferroelectricity , materials science , electrocaloric effect , phase transition , dielectric , ceramic , phase (matter) , ferroelectric ceramics , pyroelectricity , condensed matter physics , crystallography , composite material , optoelectronics , chemistry , organic chemistry , physics

The phase transition sequence in PbZrO3-based ceramics can be readily altered by chemical modification. In Pb0.99Nb0.02[(Zr0.57Sn0.43)0.92Ti0.08]0.98O3 (PNZST 43/8/2), the sequence is ferroelectric–antiferroelectric–paraelectric during heating, while in Pb0.99Nb0.02(Zr0.85Sn0.13Ti0.02)0.98O3 (PNZST 13/2/2), it is antiferroelectric–ferroelectric–paraelectric during heating. The electrocaloric effect associated with the antiferroelectric ↔ ferroelectric phase transition is studied in both ceramics via indirect measurement. PNZST 43/8/2 is observed to display a positive electrocaloric effect; in contrast, PNZST 13/2/2 exhibits a negative effect.

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