Wide electrocaloric temperature range induced by ferroelectric to antiferroelectric phase transition

Xiaohui Sun; Houbing Huang; Hasnain Mehdi Jafri; Junsheng Wang; Yongqiang Wen; Zhi Min Dang

doi:10.3390/app9081672

Wide electrocaloric temperature range induced by ferroelectric to antiferroelectric phase transition

Xiaohui Sun, Houbing Huang^*, Hasnain Mehdi Jafri, Junsheng Wang, Yongqiang Wen, Zhi Min Dang

^*此作品的通讯作者

前沿交叉科学研究院

科研成果: 期刊稿件 › 文章 › 同行评审

10 引用（Scopus）

摘要

The ferroelectric (FE) to antiferroelectric (AFE) phase transition tuning the temperature range of electrocaloric (EC) effects was investigated using phenomenological Landau-Devonshire theory. Contrary to ferroelectric to paraelectric (PE) phase transitions for electrocaloric effects, the ferroelectric to antiferroelectric phase transition was adopted to obtain large entropy changes under an applied electric field in a Sm-doping BiFeO₃ system. In addition, the doping composition and hydrostatic pressure was observed to tune the ferroelectricantiferroelectric-paraelectric phase transition temperatures and broaden the operating temperature range of electrocaloric effects. The optimal wide temperature range of ~78 K was observed at 3 GPa compressive hydrostatic pressures and 0.05 Sm-doping BiFeO₃. The present study paves the way to designing high efficiency cooling devices with larger operating temperature spans.

源语言	英语
文章编号	1672
期刊	Applied Sciences (Switzerland)
卷	9
期	8
DOI	https://doi.org/10.3390/app9081672
出版状态	已出版 - 1 4月 2019

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title = "Wide electrocaloric temperature range induced by ferroelectric to antiferroelectric phase transition",

abstract = "The ferroelectric (FE) to antiferroelectric (AFE) phase transition tuning the temperature range of electrocaloric (EC) effects was investigated using phenomenological Landau-Devonshire theory. Contrary to ferroelectric to paraelectric (PE) phase transitions for electrocaloric effects, the ferroelectric to antiferroelectric phase transition was adopted to obtain large entropy changes under an applied electric field in a Sm-doping BiFeO3 system. In addition, the doping composition and hydrostatic pressure was observed to tune the ferroelectricantiferroelectric-paraelectric phase transition temperatures and broaden the operating temperature range of electrocaloric effects. The optimal wide temperature range of ~78 K was observed at 3 GPa compressive hydrostatic pressures and 0.05 Sm-doping BiFeO3. The present study paves the way to designing high efficiency cooling devices with larger operating temperature spans.",

keywords = "Electrocaloric effect, Ferroelectric-antiferroelectric phase transition, Thermodynamic calculation, Wide temperature range",

author = "Xiaohui Sun and Houbing Huang and Jafri, {Hasnain Mehdi} and Junsheng Wang and Yongqiang Wen and Dang, {Zhi Min}",

note = "Publisher Copyright: {\textcopyright} 2019 by the authors.",

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day = "1",

doi = "10.3390/app9081672",

language = "English",

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T1 - Wide electrocaloric temperature range induced by ferroelectric to antiferroelectric phase transition

AU - Sun, Xiaohui

AU - Huang, Houbing

AU - Jafri, Hasnain Mehdi

AU - Wang, Junsheng

AU - Wen, Yongqiang

AU - Dang, Zhi Min

PY - 2019/4/1

Y1 - 2019/4/1

N2 - The ferroelectric (FE) to antiferroelectric (AFE) phase transition tuning the temperature range of electrocaloric (EC) effects was investigated using phenomenological Landau-Devonshire theory. Contrary to ferroelectric to paraelectric (PE) phase transitions for electrocaloric effects, the ferroelectric to antiferroelectric phase transition was adopted to obtain large entropy changes under an applied electric field in a Sm-doping BiFeO3 system. In addition, the doping composition and hydrostatic pressure was observed to tune the ferroelectricantiferroelectric-paraelectric phase transition temperatures and broaden the operating temperature range of electrocaloric effects. The optimal wide temperature range of ~78 K was observed at 3 GPa compressive hydrostatic pressures and 0.05 Sm-doping BiFeO3. The present study paves the way to designing high efficiency cooling devices with larger operating temperature spans.

AB - The ferroelectric (FE) to antiferroelectric (AFE) phase transition tuning the temperature range of electrocaloric (EC) effects was investigated using phenomenological Landau-Devonshire theory. Contrary to ferroelectric to paraelectric (PE) phase transitions for electrocaloric effects, the ferroelectric to antiferroelectric phase transition was adopted to obtain large entropy changes under an applied electric field in a Sm-doping BiFeO3 system. In addition, the doping composition and hydrostatic pressure was observed to tune the ferroelectricantiferroelectric-paraelectric phase transition temperatures and broaden the operating temperature range of electrocaloric effects. The optimal wide temperature range of ~78 K was observed at 3 GPa compressive hydrostatic pressures and 0.05 Sm-doping BiFeO3. The present study paves the way to designing high efficiency cooling devices with larger operating temperature spans.

KW - Electrocaloric effect

KW - Ferroelectric-antiferroelectric phase transition

KW - Thermodynamic calculation

KW - Wide temperature range

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U2 - 10.3390/app9081672

DO - 10.3390/app9081672

M3 - Article

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SN - 2076-3417

VL - 9

JO - Applied Sciences (Switzerland)

JF - Applied Sciences (Switzerland)

IS - 8

M1 - 1672

ER -

Wide electrocaloric temperature range induced by ferroelectric to antiferroelectric phase transition

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