Electric field induced phase transitions and electrocaloric effect of La3+ doped Pb(Zr,Sn,Ti)O3 ceramics

被引：13

作者：

Peng, Qihan ^{[1
,2
]}

Kandula, Kumara Raja ^{[1
,2
]}

Xia, Zhongqiu ^{[3
]}

Zhang, Chao ^{[1
,2
]}

Zhang, Yujing ^{[1
,2
]}

Yang, Ying ^{[1
,2
]}

Zhang, Qingfeng ^{[4
]}

Jiang, Shenglin ^{[1
,2
,5
]}

Xu, Jiwen ^{[6
]}

Zhang, Guangzu ^{[1
,2
]}

机构：

[1] Huazhong Univ Sci & Technol, Engn Res Ctr Funct Ceram MOE, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China

[3] Beijing Inst Space Mech & Elect, Beijing 100094, Peoples R China

[4] Hubei Univ, Fac Phys & Elect Sci, Hubei Key Lab Ferro & Piezoelect Mat & Devices, Wuhan 430068, Peoples R China

[5] Shenzhen Huazhong Univ Sci & Technol, Res Inst, Shenzhen 518057, Peoples R China

[6] Guilin Univ Elect Technol, Guangxi Key Lab Informat Mat, Guilin 541004, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2021年 / 47卷 / 10期

基金：

中国国家自然科学基金;

关键词：

PLZST; Electrocaloric effect; Phase transition; Polarization; Dielectrics;

D O I：

10.1016/j.ceramint.2021.01.262

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Electrocaloric effect (ECE) is considered well applicable in the field of next generation solid state refrigeration technology. In this article, the structural properties and ECE response were altered and optimized by tailoring the Zr/Ti molar ratio in (Pb0.94La0.04)(ZrxSn0.30Ti0.70-x)O3 (x = 0.54, 0.52, 0.50 and 0.48) polycrystalline ceramics. Multiple phase transition behaviors including antiferroelectric (AFE) state to ferroelectric (FE) state transition under applied electric field, depolarization phase change behavior and AFE state to paraelectric state (PE) transition were observed, and their effects on the ECE response were investigated in detail. Significant improvement of ECE adiabatic temperature change of 1.04 K at room temperature (30 ?C) was obtained by Maxwell method in (Pb0.94La0.04)(Zr0.52Sn0.30Ti0.18)O3 bulk ceramic through AFE?FE phase transition, while the highest ?T of 2.73 K with electrocaloric strength (?T??E- 1) of 0.039 K cm kV-1 were observed in (Pb0.94La0.04) (Zr0.50Sn0.30Ti0.20)O3 bulk ceramic at temperature close to its Curie peak. The high ECE temperature change and ECE strength make them to be candidates for using in next generation solid-state refrigeration device.

引用

页码：13939 / 13947

页数：9

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