Dielectric and electrocaloric responses of Ba(Zr0.2Ti0.8)O3 bulk ceramics and thick films with sintering AIDS

Hui Jian Ye; Xiao Shi Qian; Jinhuang Lu; Haiming Gu; Shujun Zhang; Q. M. Zhang; Dae Yong Jeong; Wen Zhu Shao; Liang Zhen

doi:10.1109/TDEI.2015.7116344

Dielectric and electrocaloric responses of Ba(Zr_0.2Ti_0.8)O₃ bulk ceramics and thick films with sintering AIDS

Hui Jian Ye, Xiao Shi Qian, Jinhuang Lu, Haiming Gu, Shujun Zhang, Q. M. Zhang, Dae Yong Jeong, Wen Zhu Shao, Liang Zhen

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Large electrocaloric effect (ECE) has been reported in Ba(Zr_0.2Ti_0.8)O₃ (BZT) bulk ceramics near room temperature. The finding opens up opportunities for developing high performance EC ceramic based refrigeration. To further reduce the operating voltage and enhance the reliability of such EC material, we investigate synthesis of BZT thick films can be fabricated into multilayer EC modules using the commercial multilayer ceramic capacitor (MLCC) technology. However, the high (1450°C) sintering temperature of BZT EC ceramics poses challenge for the MLCC with low-cost electrodes. This paper investigate sintering aids that can significantly reduce sintering temperature of BZT ceramics. The bulk and thick-film BZT with 1 wt% PbO and B₂O₃ were sintered at 1200°C and exhibited high dielectric constant and low loss around room temperature. Dielectric and electrocaloric responses of thus fabricated BZT thick films are studied. The low temperature sintered BZT thick films with proper sintering aids exhibit high breakdown field and larger ECE than the bulk BZT, thus paving the way for the future transition to EC MLCC suitable for EC cooling systems.

Original language	English (US)
Article number	7116344
Pages (from-to)	1501-1505
Number of pages	5
Journal	IEEE Transactions on Dielectrics and Electrical Insulation
Volume	22
Issue number	3
DOIs	https://doi.org/10.1109/TDEI.2015.7116344
State	Published - Jun 1 2015

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

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10.1109/TDEI.2015.7116344

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title = "Dielectric and electrocaloric responses of Ba(Zr0.2Ti0.8)O3 bulk ceramics and thick films with sintering AIDS",

abstract = "Large electrocaloric effect (ECE) has been reported in Ba(Zr0.2Ti0.8)O3 (BZT) bulk ceramics near room temperature. The finding opens up opportunities for developing high performance EC ceramic based refrigeration. To further reduce the operating voltage and enhance the reliability of such EC material, we investigate synthesis of BZT thick films can be fabricated into multilayer EC modules using the commercial multilayer ceramic capacitor (MLCC) technology. However, the high (1450°C) sintering temperature of BZT EC ceramics poses challenge for the MLCC with low-cost electrodes. This paper investigate sintering aids that can significantly reduce sintering temperature of BZT ceramics. The bulk and thick-film BZT with 1 wt% PbO and B2O3 were sintered at 1200°C and exhibited high dielectric constant and low loss around room temperature. Dielectric and electrocaloric responses of thus fabricated BZT thick films are studied. The low temperature sintered BZT thick films with proper sintering aids exhibit high breakdown field and larger ECE than the bulk BZT, thus paving the way for the future transition to EC MLCC suitable for EC cooling systems.",

author = "Ye, {Hui Jian} and Qian, {Xiao Shi} and Jinhuang Lu and Haiming Gu and Shujun Zhang and Zhang, {Q. M.} and Jeong, {Dae Yong} and Shao, {Wen Zhu} and Liang Zhen",

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AU - Ye, Hui Jian

AU - Qian, Xiao Shi

AU - Lu, Jinhuang

AU - Gu, Haiming

AU - Zhang, Shujun

AU - Zhang, Q. M.

AU - Jeong, Dae Yong

AU - Shao, Wen Zhu

AU - Zhen, Liang

PY - 2015/6/1

Y1 - 2015/6/1

N2 - Large electrocaloric effect (ECE) has been reported in Ba(Zr0.2Ti0.8)O3 (BZT) bulk ceramics near room temperature. The finding opens up opportunities for developing high performance EC ceramic based refrigeration. To further reduce the operating voltage and enhance the reliability of such EC material, we investigate synthesis of BZT thick films can be fabricated into multilayer EC modules using the commercial multilayer ceramic capacitor (MLCC) technology. However, the high (1450°C) sintering temperature of BZT EC ceramics poses challenge for the MLCC with low-cost electrodes. This paper investigate sintering aids that can significantly reduce sintering temperature of BZT ceramics. The bulk and thick-film BZT with 1 wt% PbO and B2O3 were sintered at 1200°C and exhibited high dielectric constant and low loss around room temperature. Dielectric and electrocaloric responses of thus fabricated BZT thick films are studied. The low temperature sintered BZT thick films with proper sintering aids exhibit high breakdown field and larger ECE than the bulk BZT, thus paving the way for the future transition to EC MLCC suitable for EC cooling systems.

AB - Large electrocaloric effect (ECE) has been reported in Ba(Zr0.2Ti0.8)O3 (BZT) bulk ceramics near room temperature. The finding opens up opportunities for developing high performance EC ceramic based refrigeration. To further reduce the operating voltage and enhance the reliability of such EC material, we investigate synthesis of BZT thick films can be fabricated into multilayer EC modules using the commercial multilayer ceramic capacitor (MLCC) technology. However, the high (1450°C) sintering temperature of BZT EC ceramics poses challenge for the MLCC with low-cost electrodes. This paper investigate sintering aids that can significantly reduce sintering temperature of BZT ceramics. The bulk and thick-film BZT with 1 wt% PbO and B2O3 were sintered at 1200°C and exhibited high dielectric constant and low loss around room temperature. Dielectric and electrocaloric responses of thus fabricated BZT thick films are studied. The low temperature sintered BZT thick films with proper sintering aids exhibit high breakdown field and larger ECE than the bulk BZT, thus paving the way for the future transition to EC MLCC suitable for EC cooling systems.

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Dielectric and electrocaloric responses of Ba(Zr_0.2Ti_0.8)O₃ bulk ceramics and thick films with sintering AIDS

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