The Experts below are selected from a list of 114750 Experts worldwide ranked by ideXlab platform
Xiaobing Ren - One of the best experts on this subject based on the ideXlab platform.
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Large Electrostrain from the Ferroelectric Aging Effect around a Morphotropic Phase Boundary
2019Co-Authors: Yang Yang, Zhijian Zhou, Lipeng Xin, Chao Zhou, Lixue Zhang, Andong Xiao, Xiaobing RenAbstract:A large electrostrain of ∼0.245% emerged in an intrinsic-acceptor-doped morphotropic phase boundary (MPB) system Ba(Ce0.1Ti0.9)O3–x(Ba0.7Ca0.3)TiO3 under an electric field of 30 kV/cm at 0.1 Hz. It is almost twice as that of hard lead zirconate titanates and larger than the strains of other barium-titanate-based systems with either the Aging Effect or MPB Effect. This large electrostrain is induced by the coupling of the Aging Effect and MPB Effect in the MPB composition. More interestingly, it is found that, different from the aged single-phase samples, the aged MPB sample shows a more obvious increase in electrostrain but a slighter decrease in saturation polarization. The explanation for this abnormal Aging Effect around MPB has been proposed on the basis of the symmetry-conforming principle of point defects. This work demonstrates that the ferroelectric Aging Effect around MPB could be an Effective tool to achieve a large electrostrain in ferroelectrics
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mechanism of Aging Effect in hybrid doped batio3 ceramics electronegativity and ionic radius
RSC Advances, 2016Co-Authors: Sen Yang, Wei Chen, Chao Zhou, Lixue Zhang, Xiaobing Ren, Wenfeng LiuAbstract:Physical properties of ferroelectric materials are usually tailored (for high operation temperature, temperature stability, etc.) through introduction of acceptor and donor dopants that usually induce different Aging phenomena. Hence it is of great interest to understand the Aging behavior in the presence of both acceptors and donors. In this work, we report the Aging Effect in hybrid-doped BaTiO3 ceramics, reflected by the time-dependent change of polarization (P)–electric field (E) hysteresis loops in these cases with different dopant combinations of acceptors (Mn3+, Fe3+, Co3+) and donors (Nb5+, La3+). The results indicate that the electronegativity and the ionic radius of acceptors, rather than the substitution site of the donors, play the key role in the formation of defect pairs which dominates the Aging Effect in hybrid-doped ferroelectrics. Finally, we propose a unified microscopic mechanism for the Aging phenomena in hybrid-doped ferroelectrics, and it provides direct instructions for manipulating the Aging Effect in hybrid-doped ferroelectric materials.
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ferroelectric Aging Effect in hybrid doped batio3 ceramics and the associated large recoverable electrostrain
Applied Physics Letters, 2006Co-Authors: Wenfeng Liu, Wei Chen, Chao Zhou, Lixue Zhang, Yu Wang, Liu Yang, Xiaobing RenAbstract:Acceptor doping and donor doping have been known to result in opposite ferroelectric Aging Effects, but the Aging Effect of hybrid-doped (acceptor+donor) ferroelectrics has remained unclear. In this letter the authors report the Aging Effect in Mn3++Nb5+ hybrid-doped BaTiO3 ceramics with acceptor fixed at 1mol% but with donor varied from 0.5to2mol%. The authors found surprisingly that ferroelectric Aging existed in all the samples, no matter which of the two, acceptor or donor, was dominant: all the samples showed a double hysteresis loop after Aging, but with increasing donor (Nb5+) concentration the coercive field and hysteresis decrease. Meanwhile, a large nonlinear recoverable electrostrain up to 0.17% (due to reversible domain switching) was observed at 3kV∕mm, which exceeded that of acceptor-monodoped ceramics and was about twice the piezoelectric strain of hard lead zirconate titanate. These results demonstrate that hybrid doping is an Effective way to enhance the domain-switching-related electrost...
Wei Chen - One of the best experts on this subject based on the ideXlab platform.
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mechanism of Aging Effect in hybrid doped batio3 ceramics electronegativity and ionic radius
RSC Advances, 2016Co-Authors: Sen Yang, Wei Chen, Chao Zhou, Lixue Zhang, Xiaobing Ren, Wenfeng LiuAbstract:Physical properties of ferroelectric materials are usually tailored (for high operation temperature, temperature stability, etc.) through introduction of acceptor and donor dopants that usually induce different Aging phenomena. Hence it is of great interest to understand the Aging behavior in the presence of both acceptors and donors. In this work, we report the Aging Effect in hybrid-doped BaTiO3 ceramics, reflected by the time-dependent change of polarization (P)–electric field (E) hysteresis loops in these cases with different dopant combinations of acceptors (Mn3+, Fe3+, Co3+) and donors (Nb5+, La3+). The results indicate that the electronegativity and the ionic radius of acceptors, rather than the substitution site of the donors, play the key role in the formation of defect pairs which dominates the Aging Effect in hybrid-doped ferroelectrics. Finally, we propose a unified microscopic mechanism for the Aging phenomena in hybrid-doped ferroelectrics, and it provides direct instructions for manipulating the Aging Effect in hybrid-doped ferroelectric materials.
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Effect of the mn doping concentration on the dielectric and ferroelectric properties of different routes fabricated batio3 based ceramics
Journal of Alloys and Compounds, 2016Co-Authors: Wei Chen, Lixue Zhang, Xia Zhao, Jingen Sun, Lisheng ZhongAbstract:Abstract In this work we systematically studied the Effect of the Mn doping concentration on the microstructure, dielectric, and ferroelectric properties of the BaTiO 3 -based ceramics with different fabrication routes. We found that for the fabrication route of BaTi (1-x) Mn x O 3 (hereafter the x was 0.003, 0.007, 0.010, and 0.013), with the Mn concentration increased, the Curie temperature shifted to the low temperature, the Aging Effect of the samples enhanced, and the recoverable electro-strain decreased. This result was due to that Mn occupies the Ti site and generates oxygen vacancy. And with the Mn concentration increased the more oxygen vacancy was generated to affect the properties. Volume Effect was dominant in the Aging process in this fabrication route. While, for the fabrication route of BT + xMn, with the Mn concentration increased, the Curie temperature nearly no change, the Aging Effect of the samples weakened, and the recoverable electro-strain also decreased. This result was due to that the Mn was difficult to be soluble into the BaTiO 3 ceramics and inhibited the grain growth. Thus with the Mn concentration increased, the fine grain formed. The grain boundary Effect was responsible for the properties changes.
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ferroelectric Aging Effect in hybrid doped batio3 ceramics and the associated large recoverable electrostrain
Applied Physics Letters, 2006Co-Authors: Wenfeng Liu, Wei Chen, Chao Zhou, Lixue Zhang, Yu Wang, Liu Yang, Xiaobing RenAbstract:Acceptor doping and donor doping have been known to result in opposite ferroelectric Aging Effects, but the Aging Effect of hybrid-doped (acceptor+donor) ferroelectrics has remained unclear. In this letter the authors report the Aging Effect in Mn3++Nb5+ hybrid-doped BaTiO3 ceramics with acceptor fixed at 1mol% but with donor varied from 0.5to2mol%. The authors found surprisingly that ferroelectric Aging existed in all the samples, no matter which of the two, acceptor or donor, was dominant: all the samples showed a double hysteresis loop after Aging, but with increasing donor (Nb5+) concentration the coercive field and hysteresis decrease. Meanwhile, a large nonlinear recoverable electrostrain up to 0.17% (due to reversible domain switching) was observed at 3kV∕mm, which exceeded that of acceptor-monodoped ceramics and was about twice the piezoelectric strain of hard lead zirconate titanate. These results demonstrate that hybrid doping is an Effective way to enhance the domain-switching-related electrost...
Lixue Zhang - One of the best experts on this subject based on the ideXlab platform.
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Large Electrostrain from the Ferroelectric Aging Effect around a Morphotropic Phase Boundary
2019Co-Authors: Yang Yang, Zhijian Zhou, Lipeng Xin, Chao Zhou, Lixue Zhang, Andong Xiao, Xiaobing RenAbstract:A large electrostrain of ∼0.245% emerged in an intrinsic-acceptor-doped morphotropic phase boundary (MPB) system Ba(Ce0.1Ti0.9)O3–x(Ba0.7Ca0.3)TiO3 under an electric field of 30 kV/cm at 0.1 Hz. It is almost twice as that of hard lead zirconate titanates and larger than the strains of other barium-titanate-based systems with either the Aging Effect or MPB Effect. This large electrostrain is induced by the coupling of the Aging Effect and MPB Effect in the MPB composition. More interestingly, it is found that, different from the aged single-phase samples, the aged MPB sample shows a more obvious increase in electrostrain but a slighter decrease in saturation polarization. The explanation for this abnormal Aging Effect around MPB has been proposed on the basis of the symmetry-conforming principle of point defects. This work demonstrates that the ferroelectric Aging Effect around MPB could be an Effective tool to achieve a large electrostrain in ferroelectrics
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mechanism of Aging Effect in hybrid doped batio3 ceramics electronegativity and ionic radius
RSC Advances, 2016Co-Authors: Sen Yang, Wei Chen, Chao Zhou, Lixue Zhang, Xiaobing Ren, Wenfeng LiuAbstract:Physical properties of ferroelectric materials are usually tailored (for high operation temperature, temperature stability, etc.) through introduction of acceptor and donor dopants that usually induce different Aging phenomena. Hence it is of great interest to understand the Aging behavior in the presence of both acceptors and donors. In this work, we report the Aging Effect in hybrid-doped BaTiO3 ceramics, reflected by the time-dependent change of polarization (P)–electric field (E) hysteresis loops in these cases with different dopant combinations of acceptors (Mn3+, Fe3+, Co3+) and donors (Nb5+, La3+). The results indicate that the electronegativity and the ionic radius of acceptors, rather than the substitution site of the donors, play the key role in the formation of defect pairs which dominates the Aging Effect in hybrid-doped ferroelectrics. Finally, we propose a unified microscopic mechanism for the Aging phenomena in hybrid-doped ferroelectrics, and it provides direct instructions for manipulating the Aging Effect in hybrid-doped ferroelectric materials.
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Effect of the mn doping concentration on the dielectric and ferroelectric properties of different routes fabricated batio3 based ceramics
Journal of Alloys and Compounds, 2016Co-Authors: Wei Chen, Lixue Zhang, Xia Zhao, Jingen Sun, Lisheng ZhongAbstract:Abstract In this work we systematically studied the Effect of the Mn doping concentration on the microstructure, dielectric, and ferroelectric properties of the BaTiO 3 -based ceramics with different fabrication routes. We found that for the fabrication route of BaTi (1-x) Mn x O 3 (hereafter the x was 0.003, 0.007, 0.010, and 0.013), with the Mn concentration increased, the Curie temperature shifted to the low temperature, the Aging Effect of the samples enhanced, and the recoverable electro-strain decreased. This result was due to that Mn occupies the Ti site and generates oxygen vacancy. And with the Mn concentration increased the more oxygen vacancy was generated to affect the properties. Volume Effect was dominant in the Aging process in this fabrication route. While, for the fabrication route of BT + xMn, with the Mn concentration increased, the Curie temperature nearly no change, the Aging Effect of the samples weakened, and the recoverable electro-strain also decreased. This result was due to that the Mn was difficult to be soluble into the BaTiO 3 ceramics and inhibited the grain growth. Thus with the Mn concentration increased, the fine grain formed. The grain boundary Effect was responsible for the properties changes.
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ferroelectric Aging Effect in hybrid doped batio3 ceramics and the associated large recoverable electrostrain
Applied Physics Letters, 2006Co-Authors: Wenfeng Liu, Wei Chen, Chao Zhou, Lixue Zhang, Yu Wang, Liu Yang, Xiaobing RenAbstract:Acceptor doping and donor doping have been known to result in opposite ferroelectric Aging Effects, but the Aging Effect of hybrid-doped (acceptor+donor) ferroelectrics has remained unclear. In this letter the authors report the Aging Effect in Mn3++Nb5+ hybrid-doped BaTiO3 ceramics with acceptor fixed at 1mol% but with donor varied from 0.5to2mol%. The authors found surprisingly that ferroelectric Aging existed in all the samples, no matter which of the two, acceptor or donor, was dominant: all the samples showed a double hysteresis loop after Aging, but with increasing donor (Nb5+) concentration the coercive field and hysteresis decrease. Meanwhile, a large nonlinear recoverable electrostrain up to 0.17% (due to reversible domain switching) was observed at 3kV∕mm, which exceeded that of acceptor-monodoped ceramics and was about twice the piezoelectric strain of hard lead zirconate titanate. These results demonstrate that hybrid doping is an Effective way to enhance the domain-switching-related electrost...
Byoungchul Shin - One of the best experts on this subject based on the ideXlab platform.
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Aging Effect and origin of deep level emission in zno thin film deposited by pulsed laser deposition
Applied Physics Letters, 2005Co-Authors: Fukai Shan, Byoungchul ShinAbstract:ZnO thin films were deposited on sapphire substrates at 400°C in the pulsed laser deposition (PLD) system. Those thin films showed two emission peaks. One was near band edge emission at around 379nm; the other was deep-level (DL) emission at around 510nm. The Aging Effect on photoluminescence (PL) of the thin film was observed. It was found that the DL emission decreased with time. Post-annealing processes were carried out to find the origin of the DL emission. The thin films were annealed at 800°C in N2 or O2 ambient gas in a rapid thermal annealing system. An atomic force microscope was used to investigate the surface morphologies of the thin films. The surface roughness of annealed thin film was much smaller than that of the as-deposited one. The transmittance of the annealed thin film decreased much compared with that of the as-deposited thin film. The DL emission of the thin film annealed in N2 increased, and the DL emission of thin film annealed in O2 decreased. The oxygen vacancies instead of zinc ...
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Aging Effect and origin of deep level emission in zno thin film deposited by pulsed laser deposition
Applied Physics Letters, 2005Co-Authors: Fukai Shan, Guoxia Liu, W J Lee, Geonwoong Lee, I S Kim, Byoungchul ShinAbstract:ZnO thin films were deposited on sapphire substrates at 400°C in the pulsed laser deposition (PLD) system. Those thin films showed two emission peaks. One was near band edge emission at around 379nm; the other was deep-level (DL) emission at around 510nm. The Aging Effect on photoluminescence (PL) of the thin film was observed. It was found that the DL emission decreased with time. Post-annealing processes were carried out to find the origin of the DL emission. The thin films were annealed at 800°C in N2 or O2 ambient gas in a rapid thermal annealing system. An atomic force microscope was used to investigate the surface morphologies of the thin films. The surface roughness of annealed thin film was much smaller than that of the as-deposited one. The transmittance of the annealed thin film decreased much compared with that of the as-deposited thin film. The DL emission of the thin film annealed in N2 increased, and the DL emission of thin film annealed in O2 decreased. The oxygen vacancies instead of zinc interstitials were the main reason for DL emission in ZnO thin films deposited by PLD.
Wenfeng Liu - One of the best experts on this subject based on the ideXlab platform.
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mechanism of Aging Effect in hybrid doped batio3 ceramics electronegativity and ionic radius
RSC Advances, 2016Co-Authors: Sen Yang, Wei Chen, Chao Zhou, Lixue Zhang, Xiaobing Ren, Wenfeng LiuAbstract:Physical properties of ferroelectric materials are usually tailored (for high operation temperature, temperature stability, etc.) through introduction of acceptor and donor dopants that usually induce different Aging phenomena. Hence it is of great interest to understand the Aging behavior in the presence of both acceptors and donors. In this work, we report the Aging Effect in hybrid-doped BaTiO3 ceramics, reflected by the time-dependent change of polarization (P)–electric field (E) hysteresis loops in these cases with different dopant combinations of acceptors (Mn3+, Fe3+, Co3+) and donors (Nb5+, La3+). The results indicate that the electronegativity and the ionic radius of acceptors, rather than the substitution site of the donors, play the key role in the formation of defect pairs which dominates the Aging Effect in hybrid-doped ferroelectrics. Finally, we propose a unified microscopic mechanism for the Aging phenomena in hybrid-doped ferroelectrics, and it provides direct instructions for manipulating the Aging Effect in hybrid-doped ferroelectric materials.
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ferroelectric Aging Effect in hybrid doped batio3 ceramics and the associated large recoverable electrostrain
Applied Physics Letters, 2006Co-Authors: Wenfeng Liu, Wei Chen, Chao Zhou, Lixue Zhang, Yu Wang, Liu Yang, Xiaobing RenAbstract:Acceptor doping and donor doping have been known to result in opposite ferroelectric Aging Effects, but the Aging Effect of hybrid-doped (acceptor+donor) ferroelectrics has remained unclear. In this letter the authors report the Aging Effect in Mn3++Nb5+ hybrid-doped BaTiO3 ceramics with acceptor fixed at 1mol% but with donor varied from 0.5to2mol%. The authors found surprisingly that ferroelectric Aging existed in all the samples, no matter which of the two, acceptor or donor, was dominant: all the samples showed a double hysteresis loop after Aging, but with increasing donor (Nb5+) concentration the coercive field and hysteresis decrease. Meanwhile, a large nonlinear recoverable electrostrain up to 0.17% (due to reversible domain switching) was observed at 3kV∕mm, which exceeded that of acceptor-monodoped ceramics and was about twice the piezoelectric strain of hard lead zirconate titanate. These results demonstrate that hybrid doping is an Effective way to enhance the domain-switching-related electrost...