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Direct measurement of electrocaloric effect in lead-free Ba(SnxTi1-x)O3 ceramics

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Sanlialp, Mehmet, Luo, Zheng-Dong, Shvartsman, Vladimir V., Wei, Xianzhu, Liu, Yang, Dkhil, Brahim and Lupascu, Doru C. (2017) Direct measurement of electrocaloric effect in lead-free Ba(SnxTi1-x)O3 ceramics. Applied Physics Letters, 111 (17). 173903. doi:10.1063/1.5001196

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Official URL: https://doi.org/10.1063/1.5001196

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Abstract

In this study, we report on investigation of the electrocaloric (EC) effect in lead-free Ba(SnxTi1-x)O3 (BSnT) ceramics with compositions in the range of 0.08 ≤ x ≤ 0.15 by the direct measurement method using a differential scanning calorimeter. The maximum EC temperature change, ΔTEC-max = 0.63 K under an electric field of 2 kV/mm, was observed for the composition with x = 0.11 at ∼44 °C around the multiphase coexistence region. We observed that the EC effect also peaks at transitions between ferroelectric phases of different symmetries. Comparison with the results of indirect EC measurements from our previous work shows that the indirect approach provides reasonable estimations of the magnitude of the largest EC temperature changes and EC strength. However, it fails to describe correctly temperature dependences of the EC effect for the compositions showing relaxor-like behaviour (x = 0.14 and 0.15) because of their non-ergodic nature. Our study provides strong evidence supporting that looking for multiphase ferroelectric materials can be very useful to optimize EC performance.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Pyroelectricity, Piezoelectric ceramics
Journal or Publication Title: Applied Physics Letters
Publisher: American Institute of Physics
ISSN: 0003-6951
Official Date: 23 October 2017
Dates:
DateEvent
23 October 2017Published
12 October 2017Accepted
Volume: 111
Number: 17
Article Number: 173903
DOI: 10.1063/1.5001196
Status: Peer Reviewed
Publication Status: Published
Publisher Statement: “This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Sanlialp, Mehmet, Luo, Zheng-Dong, Shvartsman, Vladimir V., Wei, Xianzhu, Liu, Yang, Dkhil, Brahim and Lupascu, Doru C. (2017) Direct measurement of electrocaloric effect in lead-free Ba(SnxTi1-x)O3 ceramics. Applied Physics Letters, 111 (17). 173903. and may be found at doi:10.1063/1.5001196
Access rights to Published version: Restricted or Subscription Access
Copyright Holders: AIP Publishing
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
SPP 1599 Project No. Lu729/15-2[DFG] Deutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659
ANR-10-LABX-0035[ANR] Agence Nationale de la Recherchehttp://dx.doi.org/10.13039/501100001665
Project No. 16/1159210Fonds De La Recherche Scientifique - FNRShttp://dx.doi.org/10.13039/501100002661

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