Contributions of domain wall motion to complex electromechanical coefficients of 0.62Pb(Mg1/3Nb2/3)O3-0. 38PbTiO3 crystals

Zhu Wang; Rui Zhang; Enwei Sun; Wenwu Cao

doi:10.1063/1.3273484

Contributions of domain wall motion to complex electromechanical coefficients of 0.62Pb(Mg_1/3Nb_2/3)O₃-0. 38PbTiO₃ crystals

Zhu Wang, Rui Zhang, Enwei Sun, Wenwu Cao

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

11 Scopus citations

Abstract

The loss behavior of 0.62Pb(Mg_1/3Nb_2/3)O ₃-0.38PbTiO₃ (PMN-38%PT) ferroelectric single crystal poled along [001]_c was investigated. It was found that the complex electromechanical coefficients and loss factors change dramatically at the coercive field E_c around 250 V/mm, representing the intrinsic switching barrier. Since the energy loss is related to the domain wall motion, the imaginary parts of the electromechanical coefficients can be used to study the degree of domain wall motions in relaxor-based ferroelectric single crystals. Experimental results indicate that for this system, domain wall motion contributes significantly to the imaginary parts of electromechanical coefficients. In addition, [001]_c poled PMN-38%PT single crystals have much larger mechanical loss factor compared to that of conventional single crystal like LiNbO₃. This phenomenon is proved to be closely related to 90° domain wall motion in this crystal system.

Original language	English (US)
Article number	014110
Journal	Journal of Applied Physics
Volume	107
Issue number	1
DOIs	https://doi.org/10.1063/1.3273484
State	Published - 2010

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1063/1.3273484

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@article{ae4ac8faf1364245963c51551844c2ac,

title = "Contributions of domain wall motion to complex electromechanical coefficients of 0.62Pb(Mg1/3Nb2/3)O3-0. 38PbTiO3 crystals",

abstract = "The loss behavior of 0.62Pb(Mg1/3Nb2/3)O 3-0.38PbTiO3 (PMN-38%PT) ferroelectric single crystal poled along [001]c was investigated. It was found that the complex electromechanical coefficients and loss factors change dramatically at the coercive field Ec around 250 V/mm, representing the intrinsic switching barrier. Since the energy loss is related to the domain wall motion, the imaginary parts of the electromechanical coefficients can be used to study the degree of domain wall motions in relaxor-based ferroelectric single crystals. Experimental results indicate that for this system, domain wall motion contributes significantly to the imaginary parts of electromechanical coefficients. In addition, [001]c poled PMN-38%PT single crystals have much larger mechanical loss factor compared to that of conventional single crystal like LiNbO3. This phenomenon is proved to be closely related to 90° domain wall motion in this crystal system.",

author = "Zhu Wang and Rui Zhang and Enwei Sun and Wenwu Cao",

note = "Funding Information: This research was supported in part by the NSFC under Grant Nos. 50602009 and 50972034, Program of the Ministry of Education of China for New Century Excellent Talents in University under Grant No. NCET-06-0345, Postdoctoral Science Research Developmental Foundation of Heilongjiang Province under Grant No. LBH-Q06068, SRF for ROCS, SEM, and NIH under Grant No. P41-EB21820.",

year = "2010",

doi = "10.1063/1.3273484",

language = "English (US)",

volume = "107",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics Publising LLC",

number = "1",

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TY - JOUR

T1 - Contributions of domain wall motion to complex electromechanical coefficients of 0.62Pb(Mg1/3Nb2/3)O3-0. 38PbTiO3 crystals

AU - Wang, Zhu

AU - Zhang, Rui

AU - Sun, Enwei

AU - Cao, Wenwu

N1 - Funding Information: This research was supported in part by the NSFC under Grant Nos. 50602009 and 50972034, Program of the Ministry of Education of China for New Century Excellent Talents in University under Grant No. NCET-06-0345, Postdoctoral Science Research Developmental Foundation of Heilongjiang Province under Grant No. LBH-Q06068, SRF for ROCS, SEM, and NIH under Grant No. P41-EB21820.

PY - 2010

Y1 - 2010

N2 - The loss behavior of 0.62Pb(Mg1/3Nb2/3)O 3-0.38PbTiO3 (PMN-38%PT) ferroelectric single crystal poled along [001]c was investigated. It was found that the complex electromechanical coefficients and loss factors change dramatically at the coercive field Ec around 250 V/mm, representing the intrinsic switching barrier. Since the energy loss is related to the domain wall motion, the imaginary parts of the electromechanical coefficients can be used to study the degree of domain wall motions in relaxor-based ferroelectric single crystals. Experimental results indicate that for this system, domain wall motion contributes significantly to the imaginary parts of electromechanical coefficients. In addition, [001]c poled PMN-38%PT single crystals have much larger mechanical loss factor compared to that of conventional single crystal like LiNbO3. This phenomenon is proved to be closely related to 90° domain wall motion in this crystal system.

AB - The loss behavior of 0.62Pb(Mg1/3Nb2/3)O 3-0.38PbTiO3 (PMN-38%PT) ferroelectric single crystal poled along [001]c was investigated. It was found that the complex electromechanical coefficients and loss factors change dramatically at the coercive field Ec around 250 V/mm, representing the intrinsic switching barrier. Since the energy loss is related to the domain wall motion, the imaginary parts of the electromechanical coefficients can be used to study the degree of domain wall motions in relaxor-based ferroelectric single crystals. Experimental results indicate that for this system, domain wall motion contributes significantly to the imaginary parts of electromechanical coefficients. In addition, [001]c poled PMN-38%PT single crystals have much larger mechanical loss factor compared to that of conventional single crystal like LiNbO3. This phenomenon is proved to be closely related to 90° domain wall motion in this crystal system.

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Contributions of domain wall motion to complex electromechanical coefficients of 0.62Pb(Mg_1/3Nb_2/3)O₃-0. 38PbTiO₃ crystals

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