Manipulation of Curie temperature and ferroelectric polarization for large electrocaloric strength in BaTiO3-based ceramics

Zhibin Lv; Jie Wei; Tiantian Yang; Zehao Sun; Zhuo Xu

doi:10.1016/j.ceramint.2020.03.027

Manipulation of Curie temperature and ferroelectric polarization for large electrocaloric strength in BaTiO₃-based ceramics

Zhibin Lv
, Jie Wei
, Tiantian Yang
, Zehao Sun
, Zhuo Xu

Faculty of Electronic and Information Engineering

Xi'an Jiaotong University

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

36 Scopus citations

Abstract

Manipulation of Curie temperature and ferroelectric polarization for enhanced room temperature electrocaloric effect (ECE) was systematically investigated in lead-free Ba_1-xLa_xTiO₃ ferroelectric ceramics prepared by a two-step solid-state sintering technology. The experimental results and analysis showed that La dopants significantly influenced the morphology, Curie temperature, ferroelectric properties and electrocaloric effect of BaTiO₃ ceramics. Especially, based on the analysis and calculation via the Maxwell relationship, a large electrocaloric strength ΔT/ΔE = 0.30 K·mm/kV near room temperature (T_C = 303 K) was obtained in Ba_0.96La_0.04TiO₃ ceramic. The present work implied an effective and reliable way to realize the room temperature electrocaloric effect in lead-free ferroelectric materials for the future application of solid-state refrigeration technology.

Original language	English
Pages (from-to)	14978-14984
Number of pages	7
Journal	Ceramics International
Volume	46
Issue number	10
DOIs	https://doi.org/10.1016/j.ceramint.2020.03.027
State	Published - Jul 2020

Keywords

BaTiO
Curie temperature
Dopant
Electrocaloric effect
Ferroelectric

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10.1016/j.ceramint.2020.03.027

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@article{842b421e78044ed28a89f5822eaf3f7f,

title = "Manipulation of Curie temperature and ferroelectric polarization for large electrocaloric strength in BaTiO3-based ceramics",

abstract = "Manipulation of Curie temperature and ferroelectric polarization for enhanced room temperature electrocaloric effect (ECE) was systematically investigated in lead-free Ba1-xLaxTiO3 ferroelectric ceramics prepared by a two-step solid-state sintering technology. The experimental results and analysis showed that La dopants significantly influenced the morphology, Curie temperature, ferroelectric properties and electrocaloric effect of BaTiO3 ceramics. Especially, based on the analysis and calculation via the Maxwell relationship, a large electrocaloric strength ΔT/ΔE = 0.30 K·mm/kV near room temperature (TC = 303 K) was obtained in Ba0.96La0.04TiO3 ceramic. The present work implied an effective and reliable way to realize the room temperature electrocaloric effect in lead-free ferroelectric materials for the future application of solid-state refrigeration technology.",

keywords = "BaTiO, Curie temperature, Dopant, Electrocaloric effect, Ferroelectric",

author = "Zhibin Lv and Jie Wei and Tiantian Yang and Zehao Sun and Zhuo Xu",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd and Techna Group S.r.l.",

year = "2020",

month = jul,

doi = "10.1016/j.ceramint.2020.03.027",

language = "英语",

volume = "46",

pages = "14978--14984",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd",

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}

TY - JOUR

T1 - Manipulation of Curie temperature and ferroelectric polarization for large electrocaloric strength in BaTiO3-based ceramics

AU - Lv, Zhibin

AU - Wei, Jie

AU - Yang, Tiantian

AU - Sun, Zehao

AU - Xu, Zhuo

PY - 2020/7

Y1 - 2020/7

N2 - Manipulation of Curie temperature and ferroelectric polarization for enhanced room temperature electrocaloric effect (ECE) was systematically investigated in lead-free Ba1-xLaxTiO3 ferroelectric ceramics prepared by a two-step solid-state sintering technology. The experimental results and analysis showed that La dopants significantly influenced the morphology, Curie temperature, ferroelectric properties and electrocaloric effect of BaTiO3 ceramics. Especially, based on the analysis and calculation via the Maxwell relationship, a large electrocaloric strength ΔT/ΔE = 0.30 K·mm/kV near room temperature (TC = 303 K) was obtained in Ba0.96La0.04TiO3 ceramic. The present work implied an effective and reliable way to realize the room temperature electrocaloric effect in lead-free ferroelectric materials for the future application of solid-state refrigeration technology.

AB - Manipulation of Curie temperature and ferroelectric polarization for enhanced room temperature electrocaloric effect (ECE) was systematically investigated in lead-free Ba1-xLaxTiO3 ferroelectric ceramics prepared by a two-step solid-state sintering technology. The experimental results and analysis showed that La dopants significantly influenced the morphology, Curie temperature, ferroelectric properties and electrocaloric effect of BaTiO3 ceramics. Especially, based on the analysis and calculation via the Maxwell relationship, a large electrocaloric strength ΔT/ΔE = 0.30 K·mm/kV near room temperature (TC = 303 K) was obtained in Ba0.96La0.04TiO3 ceramic. The present work implied an effective and reliable way to realize the room temperature electrocaloric effect in lead-free ferroelectric materials for the future application of solid-state refrigeration technology.

KW - BaTiO

KW - Curie temperature

KW - Dopant

KW - Electrocaloric effect

KW - Ferroelectric

UR - https://www.scopus.com/pages/publications/85080977399

U2 - 10.1016/j.ceramint.2020.03.027

DO - 10.1016/j.ceramint.2020.03.027

M3 - 文章

AN - SCOPUS:85080977399

SN - 0272-8842

VL - 46

SP - 14978

EP - 14984

JO - Ceramics International

JF - Ceramics International

IS - 10

ER -

Manipulation of Curie temperature and ferroelectric polarization for large electrocaloric strength in BaTiO₃-based ceramics

Abstract

Keywords

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