Elastocaloric and Piezocaloric Effects in Lead Zirconate Titanate Ceramics | Zendy

Patel Satyanarayan | Zendy; Chauhan Aditya | Zendy; Vaish Rahul | Zendy

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Elastocaloric and Piezocaloric Effects in Lead Zirconate Titanate Ceramics

Author(s) -

Patel Satyanarayan,

Chauhan Aditya,

Vaish Rahul

Publication year - 2016

Publication title -

energy technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.91

H-Index - 44

eISSN - 2194-4296

pISSN - 2194-4288

DOI - 10.1002/ente.201500446

Subject(s) - lead zirconate titanate , materials science , ceramic , polarization (electrochemistry) , composite material , lead titanate , phase transition , titanate , stress (linguistics) , lead (geology) , zirconate , ferroelectricity , thermodynamics , dielectric , chemistry , optoelectronics , physics , philosophy , geomorphology , geology , linguistics

This study demonstrates that stress‐driven caloric effects can be obtained in bulk lead zirconate titanate (PZT) ceramics. The strain and polarization gradient have been utilized to determine the elastocaloric and piezocaloric effects, respectively. Almost similar values are obtained up to the phase transition point (390 K), beyond which a large difference is observed. A peak elastocaloric temperature change of 1.9 K was obtained for an applied compressive stress of 0–400 MPa (450 K). Conversely, a maximum piezocaloric effect of 1.7 K is observed for stress values of 0–300 MPa (390 K). Overall, this study allows one to easily differentiate between caloric effects arising from polarization and strain changes.

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