Giant electrocaloric effect in BaZr0.2Ti0.8O3 thick film

Hui-Jian Ye; Xiao-Shi Qian; Dae-Yong Jeong; Shujun Zhang; Yue Zhou; Wen-Zhu Shao; Liang Zhen; Q. M. Zhang

doi:10.1063/1.4898599

Giant electrocaloric effect in BaZr_0.2Ti_0.8O₃ thick film

Hui-Jian Ye
, Xiao-Shi Qian
, Dae-Yong Jeong
, Shujun Zhang
, Yue Zhou
, Wen-Zhu Shao
, Liang Zhen
, Q. M. Zhang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

102 Citations (Scopus)

Abstract

We report the giant electrocaloric effect (ECE) of BaZr_0.2Ti_0.8O₃ (BZT) thick film near room temperature. The BZT thick film was fabricated by the tape casting method with the thickness of 12.0 μm. Due to the near invariant critical point composition, relaxor behavior, and the stress generated between the film and the substrate, the thick film exhibits a large adiabatic temperature drop ΔT = -7°C under 19.5 MV/m electric field, large EC coefficient ΔT/ΔE = 0.50 × 10^-6 K·m·V^-1, ΔS/ΔE = 0.88 × 10^-6 J·m·kg^-1·K^-1·V^-1 over a wide temperature range near room temperature, where ΔS is the isothermal entropy change and ΔE is the applied field. These high EC properties and possibility of fabrication of the EC ceramics into multilayer ceramic capacitor configuration provide solution for the application of the EC material for practical cooling device applications. © 2014 AIP Publishing LLC.

Original language	English
Article number	152908
Journal	Applied Physics Letters
Volume	105
Issue number	15
DOIs	https://doi.org/10.1063/1.4898599
Publication status	Published - 13 Oct 2014
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

This work was supported by the Army Research Office under Grant No. W911NF-11-1-0534. D.-Y. Jeong thanks for the financial support from Inha University.

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Cite this

@article{06c9eb52c63f49fab910e7de4b8ec42f,

title = "Giant electrocaloric effect in BaZr0.2Ti0.8O3 thick film",

abstract = "We report the giant electrocaloric effect (ECE) of BaZr0.2Ti0.8O3 (BZT) thick film near room temperature. The BZT thick film was fabricated by the tape casting method with the thickness of 12.0 μm. Due to the near invariant critical point composition, relaxor behavior, and the stress generated between the film and the substrate, the thick film exhibits a large adiabatic temperature drop ΔT = -7°C under 19.5 MV/m electric field, large EC coefficient ΔT/ΔE = 0.50 × 10-6 K·m·V-1, ΔS/ΔE = 0.88 × 10-6 J·m·kg-1·K-1·V-1 over a wide temperature range near room temperature, where ΔS is the isothermal entropy change and ΔE is the applied field. These high EC properties and possibility of fabrication of the EC ceramics into multilayer ceramic capacitor configuration provide solution for the application of the EC material for practical cooling device applications. {\textcopyright} 2014 AIP Publishing LLC.",

author = "Hui-Jian Ye and Xiao-Shi Qian and Dae-Yong Jeong and Shujun Zhang and Yue Zhou and Wen-Zhu Shao and Liang Zhen and Zhang, \{Q. M.\}",

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T1 - Giant electrocaloric effect in BaZr0.2Ti0.8O3 thick film

AU - Ye, Hui-Jian

AU - Qian, Xiao-Shi

AU - Jeong, Dae-Yong

AU - Zhang, Shujun

AU - Zhou, Yue

AU - Shao, Wen-Zhu

AU - Zhen, Liang

AU - Zhang, Q. M.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2014/10/13

Y1 - 2014/10/13

N2 - We report the giant electrocaloric effect (ECE) of BaZr0.2Ti0.8O3 (BZT) thick film near room temperature. The BZT thick film was fabricated by the tape casting method with the thickness of 12.0 μm. Due to the near invariant critical point composition, relaxor behavior, and the stress generated between the film and the substrate, the thick film exhibits a large adiabatic temperature drop ΔT = -7°C under 19.5 MV/m electric field, large EC coefficient ΔT/ΔE = 0.50 × 10-6 K·m·V-1, ΔS/ΔE = 0.88 × 10-6 J·m·kg-1·K-1·V-1 over a wide temperature range near room temperature, where ΔS is the isothermal entropy change and ΔE is the applied field. These high EC properties and possibility of fabrication of the EC ceramics into multilayer ceramic capacitor configuration provide solution for the application of the EC material for practical cooling device applications. © 2014 AIP Publishing LLC.

AB - We report the giant electrocaloric effect (ECE) of BaZr0.2Ti0.8O3 (BZT) thick film near room temperature. The BZT thick film was fabricated by the tape casting method with the thickness of 12.0 μm. Due to the near invariant critical point composition, relaxor behavior, and the stress generated between the film and the substrate, the thick film exhibits a large adiabatic temperature drop ΔT = -7°C under 19.5 MV/m electric field, large EC coefficient ΔT/ΔE = 0.50 × 10-6 K·m·V-1, ΔS/ΔE = 0.88 × 10-6 J·m·kg-1·K-1·V-1 over a wide temperature range near room temperature, where ΔS is the isothermal entropy change and ΔE is the applied field. These high EC properties and possibility of fabrication of the EC ceramics into multilayer ceramic capacitor configuration provide solution for the application of the EC material for practical cooling device applications. © 2014 AIP Publishing LLC.

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DO - 10.1063/1.4898599

M3 - RGC 21 - Publication in refereed journal

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