Direct measurement of giant electrocaloric effect in BaTiO3 multilayer thick film structure beyond theoretical prediction

被引：146

作者：

Bai, Yang ^{[1
,2
]}

Zheng, Guangping ^{[1
]}

Shi, Sanqiang ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China

[2] Univ Sci & Technol Beijing, Minist Educ, Key Lab Environm Fracture, Beijing 100083, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 19期

基金：

美国国家科学基金会;

关键词：

barium compounds; dielectric polarisation; differential scanning calorimetry; ferroelectric ceramics; lattice energy; multilayers; pyroelectricity; tape casting; thermodynamic properties; FERROELECTRIC CERAMICS; ROOM-TEMPERATURE;

D O I：

10.1063/1.3430045

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electrocaloric (EC) effect of BaTiO3 multilayer thick film structure was investigated by direct measurement and theoretical calculation. The samples were prepared by the tape-casting method, which had 180 dielectric layers with an average thickness of 1.4 mu m. The thermodynamic calculation based on the polarization-temperature curves predicted a peak heat adsorption of 0.32 J/g at 80 degrees C under 176 kV/cm electric field. The direct measurement via differential scanning calorimeter showed a much higher EC effect of 0.91 J/g at 80 degrees C under same electric field. The difference could result from the different trends of changes of electric polarization and lattice elastic energy under ultrahigh electric field. (C) 2010 American Institute of Physics. [doi:10.1063/1.3430045]

引用

页数：3

共 19 条

[1] Influence of mechanical boundary conditions on the electrocaloric properties of ferroelectric thin films [J].

Akcay, G. ;

Alpay, S. P. ;

Rossetti, G. A., Jr. ;

Scott, J. F. .

JOURNAL OF APPLIED PHYSICS, 2008, 103 (02)

[2] 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)

[3] 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)

[4] Ferroelectric electrocaloric conversion in 0.75(PbMg1/3Nb2/3O3)-0.25(PbTiO3) ceramics [J].

Guyomar, Daniel ;

Sebald, Gael ;

Guiffard, Benoit ;

Seveyrat, Laurence .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2006, 39 (20) :4491-4496

[5] Direct and indirect electrocaloric measurements using multilayer capacitors [J].

Kar-Narayan, S. ;

Mathur, N. D. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2010, 43 (03)

[6] Predicted cooling powers for multilayer capacitors based on various electrocaloric and electrode materials [J].

Kar-Narayan, S. ;

Mathur, N. D. .

APPLIED PHYSICS LETTERS, 2009, 95 (24)

[7] SPECIFIC-HEAT AND ELECTRO-CALORIC PROPERTIES OF KTAO3 AT LOW-TEMPERATURES [J].

LAWLESS, WN .

PHYSICAL REVIEW B, 1977, 16 (01) :433-439

[8] Electrocaloric Materials for Solid-State Refrigeration [J].

Lu, Sheng-Guo ;

Zhang, Qiming .

ADVANCED MATERIALS, 2009, 21 (19) :1983-1987

[9] Giant electrocaloric effect in the thin film relaxor ferroelectric 0.9 PbMg1/3Nb2/3O3-0.1 PbTiO3 near room temperature [J].

Mischenko, A. S. ;

Zhang, Q. ;

Whatmore, R. W. ;

Scott, J. F. ;

Mathur, N. D. .

APPLIED PHYSICS LETTERS, 2006, 89 (24)

[10] Giant electrocaloric effect in thin-film PbZr0.95Ti0.05O3 [J].

Mischenko, AS ;

Zhang, Q ;

Scott, JF ;

Whatmore, RW ;

Mathur, ND .

SCIENCE, 2006, 311 (5765) :1270-1271

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