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

T. M. Correia; J. S. Young; R. W. Whatmore; J. F. Scott; N. D. Mathur; Q. Zhang

doi:10.1063/1.3257695

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

T. M. Correia^*, J. S. Young, R. W. Whatmore, J. F. Scott, N. D. Mathur, Q. Zhang

^*Corresponding author for this work

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

Abstract

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.

Original language	English
Article number	182904
Number of pages	3
Journal	Applied Physics Letters
Volume	95
Issue number	18
DOIs	https://doi.org/10.1063/1.3257695
Publication status	Published - 2 Nov 2009

Keywords

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

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10.1063/1.3257695

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@article{a753ea4ffd044aac884c315dc05eeb25,

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

abstract = "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.",

keywords = "dielectric hysteresis, ferroelectric thin films, ferroelectric transitions, lead compounds, magnesium compounds, pyroelectricity, relaxor ferroelectrics, ELECTROMECHANICAL PROPERTIES, FERROELECTRICS, BEHAVIOR, NIOBATE, CERAMICS",

author = "Correia, {T. M.} and Young, {J. S.} and Whatmore, {R. W.} and Scott, {J. F.} and Mathur, {N. D.} and Q. Zhang",

year = "2009",

month = nov,

day = "2",

doi = "10.1063/1.3257695",

language = "English",

volume = "95",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "18",

}

TY - JOUR

T1 - Investigation of the electrocaloric effect in a PbMg2/3Nb1/3O3-PbTiO3 relaxor thin film

AU - Correia, T. M.

AU - Young, J. S.

AU - Whatmore, R. W.

AU - Scott, J. F.

AU - Mathur, N. D.

AU - Zhang, Q.

PY - 2009/11/2

Y1 - 2009/11/2

N2 - 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.

AB - 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.

KW - dielectric hysteresis

KW - ferroelectric thin films

KW - ferroelectric transitions

KW - lead compounds

KW - magnesium compounds

KW - pyroelectricity

KW - relaxor ferroelectrics

KW - ELECTROMECHANICAL PROPERTIES

KW - FERROELECTRICS

KW - BEHAVIOR

KW - NIOBATE

KW - CERAMICS

U2 - 10.1063/1.3257695

DO - 10.1063/1.3257695

M3 - Article

SN - 0003-6951

VL - 95

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 18

M1 - 182904

ER -

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

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Keywords

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