Electrocaloric effect based on the depolarization transition in (1-x)Bi0.5Na0.5TiO3-xKNbO3 lead-free ceramics

被引：95

作者：

Jiang, Xijie ^{[1
]}

Luo, Laihui ^{[1
]}

Wang, Baoyin ^{[1
]}

Li, Weiping ^{[1
]}

Chen, Hongbing ^{[2
]}

机构：

[1] Ningbo Univ, Dept Microelect Sci & Engn, Ningbo, Zhejiang, Peoples R China

[2] Ningbo Univ, Inst Mat Sci & Engn, Ningbo, Zhejiang, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Ferroelectric; Electrocaloric effect; Lead-free; PHASE-TRANSITIONS; REFRIGERATION; TEMPERATURE;

D O I：

10.1016/j.ceramint.2013.10.066

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：

Lead-free ferroelectric ceramics (1-x)Bi0.5Na0.5TiO3-xKNbO(3) (BNT-xKN) with x=0.00, 0.04, 0.06 and 0.08 were synthesized by the conventional solid state reaction method. The effects of the KNbO3 addition on the dielectric behavior, ferroelectric properties, as well as electrocaloric effect of the ferroelectric ceramic BNT-xKN were investigated. The results show that the depolarization temperature decreases with the increment of KN content. A high BCE of 1.73 degrees C is achieved at 76 degrees C in BNT-0.06KN. The relation between electrocaloric effect and depolarization transition was discussed. This investigation indicates that the depolarization transition below Curie transition in BNT-based ceramics is a promising approach in ECE technique. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：2627 / 2634

页数：8

共 41 条

[1] Magnitude of the intrinsic electrocaloric effect in ferroelectric perovskite thin films at high electric fields [J].

Akcay, G. ;

Alpay, S. P. ;

Mantese, J. V. ;

Rossetti, G. A., Jr. .

APPLIED PHYSICS LETTERS, 2007, 90 (25)

[2]

Akcay G., 2008, J APPL PHYS, V103

[3] Microscopic interpretation of sign reversal in the electrocaloric effect in a ferroelectric PbMg1/3Nb2/3O3-30PbTiO3 single crystal [J].

Axelsson, A. -K. ;

Le Goupil, F. ;

Dunne, L. J. ;

Manos, G. ;

Valant, M. ;

Alford, N. McN. .

APPLIED PHYSICS LETTERS, 2013, 102 (10)

[4] Optimized electrocaloric refrigeration capacity in lead-free (1-x)BaZr0.2Ti0.8O3-xBa0.7Ca0.3TiO3 ceramics [J].

Bai, Yang ;

Han, Xi ;

Qiao, Lijie .

APPLIED PHYSICS LETTERS, 2013, 102 (25)

[5] Abnormal electrocaloric effect of Na0.5Bi0.5TiO3-BaTiO3 lead-free ferroelectric ceramics above room temperature [J].

Bai, Yang ;

Zheng, Guang-Ping ;

Shi, San-Qiang .

MATERIALS RESEARCH BULLETIN, 2011, 46 (11) :1866-1869

[6] Kinetic electrocaloric effect and giant net cooling of lead-free ferroelectric refrigerants [J].

Bai, Yang ;

Zheng, Guang-Ping ;

Shi, San-Qiang .

JOURNAL OF APPLIED PHYSICS, 2010, 108 (10)

[7]

Cao H.X., 2009, J APPL PHYS, V106

[8] Giant electrocaloric effect in lead-free thin film of strontium bismuth tantalite [J].

Chen, Hao ;

Ren, Tian-Ling ;

Wu, Xiao-Ming ;

Yang, Yi ;

Liu, Li-Tian .

APPLIED PHYSICS LETTERS, 2009, 94 (18)

[9] Investigation of the electrocaloric effect in a PbMg2/3Nb1/3O3-PbTiO3 relaxor thin film [J].

Correia, T. M. ;

Young, J. S. ;

Whatmore, R. W. ;

Scott, J. F. ;

Mathur, N. D. ;

Zhang, Q. .

APPLIED PHYSICS LETTERS, 2009, 95 (18)

[10] Piezoelectric and Ferroelectric Properties of Li-Doped (Bi0.5Na0.5)TiO3-(Bi0.5K0.5)TiO3-BaTiO3 Lead-Free Piezoelectric Ceramics [J].

Dai, Ye-Jing ;

Zhang, Shujun ;

Shrout, Thomas R. ;

Zhang, Xiao-Wen .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2010, 93 (04) :1108-1113

← 1 2 3 4 5 →