The Experts below are selected from a list of 33045 Experts worldwide ranked by ideXlab platform
Yang Zhang - One of the best experts on this subject based on the ideXlab platform.
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temperature and frequency dependence of the Coercive Field of 0 71pbmb1 3nb2 3o3 0 29pbtio3 relaxor based ferroelectric single crystal
Applied Physics Letters, 2017Co-Authors: Yang Zhang, Zhaojiang Chen, Zhongwu ZhangAbstract:The hysteresis loop of ferroelectric materials becomes narrower with the increase in temperature due to energy barrier reduction, while the Coercive Field level increases with frequency due to the inertia of polarization reversal. These two competing effects determine the limiting operation Field of medical imaging transducers at high frequencies. We have measured the Coercive Field of the 0.71PbMb1/3Nb2/3O3–0.29PbTiO3 single crystal as functions of both temperature and frequency. It was found that the Coercive Field linearly decreases with temperature at all frequencies. Related theoretical analysis was also performed to understand the physics behind the observed phenomena.
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Temperature and frequency dependence of the Coercive Field of 0.71PbMb1/3Nb2/3O3–0.29PbTiO3 relaxor-based ferroelectric single crystal
Applied Physics Letters, 2017Co-Authors: Yang Zhang, Zhaojiang Chen, Wenwu Cao, Zhongwu ZhangAbstract:The hysteresis loop of ferroelectric materials becomes narrower with the increase in temperature due to energy barrier reduction, while the Coercive Field level increases with frequency due to the inertia of polarization reversal. These two competing effects determine the limiting operation Field of medical imaging transducers at high frequencies. We have measured the Coercive Field of the 0.71PbMb1/3Nb2/3O3–0.29PbTiO3 single crystal as functions of both temperature and frequency. It was found that the Coercive Field linearly decreases with temperature at all frequencies. Related theoretical analysis was also performed to understand the physics behind the observed phenomena.
Zhongwu Zhang - One of the best experts on this subject based on the ideXlab platform.
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temperature and frequency dependence of the Coercive Field of 0 71pbmb1 3nb2 3o3 0 29pbtio3 relaxor based ferroelectric single crystal
Applied Physics Letters, 2017Co-Authors: Yang Zhang, Zhaojiang Chen, Zhongwu ZhangAbstract:The hysteresis loop of ferroelectric materials becomes narrower with the increase in temperature due to energy barrier reduction, while the Coercive Field level increases with frequency due to the inertia of polarization reversal. These two competing effects determine the limiting operation Field of medical imaging transducers at high frequencies. We have measured the Coercive Field of the 0.71PbMb1/3Nb2/3O3–0.29PbTiO3 single crystal as functions of both temperature and frequency. It was found that the Coercive Field linearly decreases with temperature at all frequencies. Related theoretical analysis was also performed to understand the physics behind the observed phenomena.
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Temperature and frequency dependence of the Coercive Field of 0.71PbMb1/3Nb2/3O3–0.29PbTiO3 relaxor-based ferroelectric single crystal
Applied Physics Letters, 2017Co-Authors: Yang Zhang, Zhaojiang Chen, Wenwu Cao, Zhongwu ZhangAbstract:The hysteresis loop of ferroelectric materials becomes narrower with the increase in temperature due to energy barrier reduction, while the Coercive Field level increases with frequency due to the inertia of polarization reversal. These two competing effects determine the limiting operation Field of medical imaging transducers at high frequencies. We have measured the Coercive Field of the 0.71PbMb1/3Nb2/3O3–0.29PbTiO3 single crystal as functions of both temperature and frequency. It was found that the Coercive Field linearly decreases with temperature at all frequencies. Related theoretical analysis was also performed to understand the physics behind the observed phenomena.
Zhaojiang Chen - One of the best experts on this subject based on the ideXlab platform.
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temperature and frequency dependence of the Coercive Field of 0 71pbmb1 3nb2 3o3 0 29pbtio3 relaxor based ferroelectric single crystal
Applied Physics Letters, 2017Co-Authors: Yang Zhang, Zhaojiang Chen, Zhongwu ZhangAbstract:The hysteresis loop of ferroelectric materials becomes narrower with the increase in temperature due to energy barrier reduction, while the Coercive Field level increases with frequency due to the inertia of polarization reversal. These two competing effects determine the limiting operation Field of medical imaging transducers at high frequencies. We have measured the Coercive Field of the 0.71PbMb1/3Nb2/3O3–0.29PbTiO3 single crystal as functions of both temperature and frequency. It was found that the Coercive Field linearly decreases with temperature at all frequencies. Related theoretical analysis was also performed to understand the physics behind the observed phenomena.
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Temperature and frequency dependence of the Coercive Field of 0.71PbMb1/3Nb2/3O3–0.29PbTiO3 relaxor-based ferroelectric single crystal
Applied Physics Letters, 2017Co-Authors: Yang Zhang, Zhaojiang Chen, Wenwu Cao, Zhongwu ZhangAbstract:The hysteresis loop of ferroelectric materials becomes narrower with the increase in temperature due to energy barrier reduction, while the Coercive Field level increases with frequency due to the inertia of polarization reversal. These two competing effects determine the limiting operation Field of medical imaging transducers at high frequencies. We have measured the Coercive Field of the 0.71PbMb1/3Nb2/3O3–0.29PbTiO3 single crystal as functions of both temperature and frequency. It was found that the Coercive Field linearly decreases with temperature at all frequencies. Related theoretical analysis was also performed to understand the physics behind the observed phenomena.
Wenwu Cao - One of the best experts on this subject based on the ideXlab platform.
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Temperature and frequency dependence of the Coercive Field of 0.71PbMb1/3Nb2/3O3–0.29PbTiO3 relaxor-based ferroelectric single crystal
Applied Physics Letters, 2017Co-Authors: Yang Zhang, Zhaojiang Chen, Wenwu Cao, Zhongwu ZhangAbstract:The hysteresis loop of ferroelectric materials becomes narrower with the increase in temperature due to energy barrier reduction, while the Coercive Field level increases with frequency due to the inertia of polarization reversal. These two competing effects determine the limiting operation Field of medical imaging transducers at high frequencies. We have measured the Coercive Field of the 0.71PbMb1/3Nb2/3O3–0.29PbTiO3 single crystal as functions of both temperature and frequency. It was found that the Coercive Field linearly decreases with temperature at all frequencies. Related theoretical analysis was also performed to understand the physics behind the observed phenomena.
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Coercive Field of 0 955pb zn1 3nb2 3 o3 0 045pbtio3 single crystal and its frequency dependence
Applied Physics Letters, 2002Co-Authors: Jianhua Yin, Wenwu CaoAbstract:Domain switching behavior of 0.955Pb(Zn1/3Nb2/3)O3–0.045PbTiO3 ferroelectric single crystal has been investigated using the ultrasonic technique in addition to the polarization hysteresis measurements. The ultrasonic technique makes it possible to extend the Coercive Field measurement to frequencies as low as 10−5 Hz, revealing the existence of a saturated Coercive Field Esc, which representing the intrinsic switching barrier.
Vladimir M. Fridkin - One of the best experts on this subject based on the ideXlab platform.
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Scaling of the Coercive Field in ferroelectrics at the nanoscale
JETP Letters, 2013Co-Authors: R. V. Gaynutdinov, Stephen Ducharme, M. Minnekaev, S. Mitko, A. L. Tolstikhina, Andrei Zenkevich, Vladimir M. FridkinAbstract:The scaling of the Coercive Field in ferroelectric films at the nanoscale is investigated experimentally. The scaling in the films of copolymer vinylidene fluoride and BaTiO3 with thickness equal by the order of value to the critical domain nucleus size 1–10 nm reveals deviation from the well-known Kay-Dunn law. At this thickness region Coercive Field does not depend on thickness and coincides with Landau-Ginzburg-Devonshire value.
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Comment on: 'Depolarization corrections to the Coercive Field in thin-film ferroelectrics'
arXiv: Condensed Matter, 2003Co-Authors: Stephen Ducharme, Vladimir M. FridkinAbstract:The Letter by Dawber et al. [J. Phys.: Condens. Matter 15 L393 (2003)] notes that incomplete screening in the electrodes of a ferroelectric capacitor can result in an underestimate for the true Coercive Field in films of nanometer thickness. We show that their estimate of the magnitude of this correction it too large in the case of ferroelectric copolymer Langmuir-Blodgett films and, as a result, invalidates the claim that finite-size scaling of the ferroelectric Coercive Field is evident in films thinner than 15 nm.
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General features of the intrinsic ferroelectric Coercive Field
Physics of the Solid State, 2001Co-Authors: Vladimir M. Fridkin, Stephen DucharmeAbstract:The value of the intrinsic ferroelectric Coercive Field is obtained independently, from general energy considerations and from the predictions of several models of the ferroelectric state. All predictions yield a value of the order of the depolarization Field, which is equal to the spontaneous polarization divided by the dielectric permittivity, and are consistent with the recent measurements of the intrinsic ferroelectric Coercive Field in ultrathin Langmuir-Blodgett films of copolymers of polyvinylidene fluoride with trifluoroethylene. Prior stud- ies succeeded only in measuring the much smaller extrinsic Coercive Fields, which are limited by nucleation pro- cesses and domain motion. © 2001 MAIK "Nauka/Interperiodica".
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Intrinsic ferroelectric Coercive Field
Physical review letters, 2000Co-Authors: Stephen Ducharme, Vladimir M. Fridkin, A. V. Bune, S.p. Palto, Lev M. Blinov, N. Petukhova, S. G. YudinAbstract:The Landau-Ginzburg theory of ferroelectricity predicts the intrinsic Coercive Field for polarization reversal, but the observed extrinsic Coercive Field is always much smaller as a result of nucleation, dynamic processes not covered by the static theory. We have realized the intrinsic Coercive Field for the first time, in two-dimensional Langmuir-Blodgett polymer films as thin as 1 nm. The measured Coercive Field is in good agreement with the theoretical intrinsic value, exhibits the expected dependence on temperature, and does not depend on thickness below 15 nm.