Pressure-induced room temperature electrocaloric effect in BiFeO3-PbTiO3 solid solution based on Landau-Devonshire theory

Keng Wang; Xiaoming Shi; Rongzhen Gao; Jing Wang; Jiwen Xu; Xingwang Cheng; Houbing Huang

doi:10.1016/j.mtcomm.2022.103396

Pressure-induced room temperature electrocaloric effect in BiFeO₃-PbTiO₃ solid solution based on Landau-Devonshire theory

Keng Wang, Xiaoming Shi^*, Rongzhen Gao, Jing Wang, Jiwen Xu, Xingwang Cheng, Houbing Huang

^*Corresponding author for this work

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

7 Citations (Scopus)

Abstract

The electrocaloric effect cooling is a promising next-generation cooling technology due to its high energy efficiency. In this work, the phase diagrams of BiFeO₃-PbTiO₃ solid solution have been investigated via Landau-Devonshire theory. Here, in the vicinity of morphotropic phase boundary, a relatively low electric field of 5 MV/m induces a giant electrocaloric temperature change (ΔT = 23.56 K) in a 0.81BiFeO₃-0.19PbTiO₃ solid solution at 630 K. It is found that the range of temperature change of ECE is broader with the increase of BiFeO₃ mole fraction. In addition, a broader ECE working temperature range can be obtained near the MPB region by applying hydrostatic pressure of 1 GPa. These results suggest that this system is a potential candidate for practical electrocaloric materials.

Original language	English
Article number	103396
Journal	Materials Today Communications
Volume	31
DOIs	https://doi.org/10.1016/j.mtcomm.2022.103396
Publication status	Published - Jun 2022

Keywords

BiFeO-PbTiO
Electrocaloric effect
Landau-Devonshire theory
Solid solution

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This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.mtcomm.2022.103396

Cite this

@article{cd705ed3186141c9a8e4db3488547402,

title = "Pressure-induced room temperature electrocaloric effect in BiFeO3-PbTiO3 solid solution based on Landau-Devonshire theory",

abstract = "The electrocaloric effect cooling is a promising next-generation cooling technology due to its high energy efficiency. In this work, the phase diagrams of BiFeO3-PbTiO3 solid solution have been investigated via Landau-Devonshire theory. Here, in the vicinity of morphotropic phase boundary, a relatively low electric field of 5 MV/m induces a giant electrocaloric temperature change (ΔT = 23.56 K) in a 0.81BiFeO3-0.19PbTiO3 solid solution at 630 K. It is found that the range of temperature change of ECE is broader with the increase of BiFeO3 mole fraction. In addition, a broader ECE working temperature range can be obtained near the MPB region by applying hydrostatic pressure of 1 GPa. These results suggest that this system is a potential candidate for practical electrocaloric materials.",

keywords = "BiFeO-PbTiO, Electrocaloric effect, Landau-Devonshire theory, Solid solution",

author = "Keng Wang and Xiaoming Shi and Rongzhen Gao and Jing Wang and Jiwen Xu and Xingwang Cheng and Houbing Huang",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

month = jun,

doi = "10.1016/j.mtcomm.2022.103396",

language = "English",

volume = "31",

journal = "Materials Today Communications",

issn = "2352-4928",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Pressure-induced room temperature electrocaloric effect in BiFeO3-PbTiO3 solid solution based on Landau-Devonshire theory

AU - Wang, Keng

AU - Shi, Xiaoming

AU - Gao, Rongzhen

AU - Wang, Jing

AU - Xu, Jiwen

AU - Cheng, Xingwang

AU - Huang, Houbing

PY - 2022/6

Y1 - 2022/6

N2 - The electrocaloric effect cooling is a promising next-generation cooling technology due to its high energy efficiency. In this work, the phase diagrams of BiFeO3-PbTiO3 solid solution have been investigated via Landau-Devonshire theory. Here, in the vicinity of morphotropic phase boundary, a relatively low electric field of 5 MV/m induces a giant electrocaloric temperature change (ΔT = 23.56 K) in a 0.81BiFeO3-0.19PbTiO3 solid solution at 630 K. It is found that the range of temperature change of ECE is broader with the increase of BiFeO3 mole fraction. In addition, a broader ECE working temperature range can be obtained near the MPB region by applying hydrostatic pressure of 1 GPa. These results suggest that this system is a potential candidate for practical electrocaloric materials.

AB - The electrocaloric effect cooling is a promising next-generation cooling technology due to its high energy efficiency. In this work, the phase diagrams of BiFeO3-PbTiO3 solid solution have been investigated via Landau-Devonshire theory. Here, in the vicinity of morphotropic phase boundary, a relatively low electric field of 5 MV/m induces a giant electrocaloric temperature change (ΔT = 23.56 K) in a 0.81BiFeO3-0.19PbTiO3 solid solution at 630 K. It is found that the range of temperature change of ECE is broader with the increase of BiFeO3 mole fraction. In addition, a broader ECE working temperature range can be obtained near the MPB region by applying hydrostatic pressure of 1 GPa. These results suggest that this system is a potential candidate for practical electrocaloric materials.

KW - BiFeO-PbTiO

KW - Electrocaloric effect

KW - Landau-Devonshire theory

KW - Solid solution

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DO - 10.1016/j.mtcomm.2022.103396

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SN - 2352-4928

VL - 31

JO - Materials Today Communications

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