Investigation of the electrocaloric effect in a PbMg2/3Nb1/3O3-PbTiO3 relaxor thin film

被引：190

作者：

Correia, T. M. ^{[1
]}

Young, J. S. ^{[2
]}

Whatmore, R. W. ^{[3
]}

Scott, J. F. ^{[4
]}

Mathur, N. D. ^{[2
]}

Zhang, Q. ^{[1
]}

机构：

[1] Cranfield Univ, Dept Mat, Cranfield MK43 0AL, Beds, England

[2] Univ Cambridge, Dept Mat Sci, Cambridge CB2 3QZ, England

[3] Natl Univ Ireland Univ Coll Cork, Tyndall Natl Inst, Cork, Ireland

[4] Univ Cambridge, Cavendish Lab, Dept Phys, Cambridge CB3 0HE, England

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 18期

基金：

英国工程与自然科学研究理事会;

关键词：

dielectric hysteresis; ferroelectric thin films; ferroelectric transitions; lead compounds; magnesium compounds; pyroelectricity; relaxor ferroelectrics; ELECTROMECHANICAL PROPERTIES; FERROELECTRICS; BEHAVIOR; NIOBATE; CERAMICS;

D O I：

10.1063/1.3257695

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Permittivity measurements of a 0.93PMN-0.07PT thin film show a broad maximum near 35 degrees C, and an anomaly at the depolarizing temperature T-d=18 degrees C on heating only, suggesting a dipolar glass-relaxor phase transition. No structural phase transition at 18 degrees C is apparent from ferroelectric hysteresis loops taken on field cooling and field heating. These loops show the thermal hysteresis expected for ferroelectric relaxors, which has not hitherto been experimentally verified in PbMg2/3Nb1/3O3-PbTiO3 thin films. Our data suggest the intriguing possibility of a giant electrocaloric effect (Delta T=9 K, Delta E=720 kV cm(-1)) at and near room temperature.

引用

页数：3

共 27 条

[1] Recent progress in relaxor ferroelectrics with perovskite structure [J].

Bokov, AA ;

Ye, ZG .

JOURNAL OF MATERIALS SCIENCE, 2006, 41 (01) :31-52

[2] CRYSTALLINE FERROELECTRICS WITH GLASSY POLARIZATION BEHAVIOR [J].

BURNS, G ;

DACOL, FH .

PHYSICAL REVIEW B, 1983, 28 (05) :2527-2530

[3] Preliminary results on sol-gel processing of ⟨100⟩ oriented Pb(Mg1/3Nb2/3)O3-PbTiO3 thin films using diol-based solutions [J].

Calzada, M. L. ;

Alguero, M. ;

Ricote, J. ;

Santos, A. ;

Pardo, L. .

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2007, 42 (03) :331-336

[4] Aging and slow dynamics in SrxBa1-xNb2O6 -: art. no. 134105 [J].

Chao, LK ;

Colla, EV ;

Weissman, MB ;

Viehland, DD .

PHYSICAL REVIEW B, 2005, 72 (13)

[5] 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)

[6] DIELECTRIC AND PYROELECTRIC PROPERTIES IN THE PB(MG1/3NB2/3)O3-PBTIO3 SYSTEM [J].

CHOI, SW ;

SHROUT, TR ;

JANG, SJ ;

BHALLA, AS .

FERROELECTRICS, 1989, 100 :29-38

[7] DIFFUSE PHASE-TRANSITION IN POTASSIUM STRONTIUM NIOBATE [J].

CLARKE, R ;

BURFOOT, JC .

FERROELECTRICS, 1974, 8 (1-2) :505-506

[8]

CORREIA TM, 2009, FERROELECTRICS UNPUB

[9] RELAXOR FERROELECTRICS: AN OVERVIEW [J].

Cross, L. Eric .

FERROELECTRICS, 1994, 151 (01) :305-320

[10] Dielectric and electromechanical properties of Pb(Mg1/3,Nb2/3)O3-PbTiO3 thin films grown by pulsed laser deposition [J].

Donnelly, NJ ;

Catalan, G ;

Morros, C ;

Bowman, RM ;

Gregg, JM .

JOURNAL OF APPLIED PHYSICS, 2003, 93 (12) :9924-9929

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