Cu-Doping-Modified Order State, Ferroelectric Property, Multiscale Inhomogeneities, and Local Structure in the Relaxor KTa1–x Nb x O3 Crystal
Cu doping in the KTa1–x Nb x O3 crystal was investigated comprehensively from the dielectric measurement, global ferroelectric property, electro-optic (EO) modulation, and local structure. The orientation of the domain structure can be stabilized by Cu doping and is immune to thermal disturbance in...
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Published in | Crystal growth & design Vol. 22; no. 11; pp. 6766 - 6774 |
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Main Authors | , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
American Chemical Society
02.11.2022
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Abstract | Cu doping in the KTa1–x Nb x O3 crystal was investigated comprehensively from the dielectric measurement, global ferroelectric property, electro-optic (EO) modulation, and local structure. The orientation of the domain structure can be stabilized by Cu doping and is immune to thermal disturbance in the ferroelectric phase, and the field-driven activity of polar nanoregions (PNRs) can be decreased in the paraelectric phase. The coercive field was reduced and the reversal process of the domain structure was greatly changed, which could be attributed to the enhanced heterogeneity and the driving force provided by the defect dipole, respectively. The frequency dependence of the EO modulation depth for KTN and KTN:Cu crystals implied that Cu doping can strengthen the multiscale inhomogeneity and polarization of PNRs. Based on the first-principles calculation, the octahedral distortions of KTN and KTN:Cu were calculated, and the results implied that Cu doping can result in a greater octahedron distortion, thus enhancing the local heterogeneity and resulting in stronger local polarization. The study will provide guidance for the growth of crystals to realize the optimization and design of functional materials. |
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AbstractList | Cu doping in the KTa1–x Nb x O3 crystal was investigated comprehensively from the dielectric measurement, global ferroelectric property, electro-optic (EO) modulation, and local structure. The orientation of the domain structure can be stabilized by Cu doping and is immune to thermal disturbance in the ferroelectric phase, and the field-driven activity of polar nanoregions (PNRs) can be decreased in the paraelectric phase. The coercive field was reduced and the reversal process of the domain structure was greatly changed, which could be attributed to the enhanced heterogeneity and the driving force provided by the defect dipole, respectively. The frequency dependence of the EO modulation depth for KTN and KTN:Cu crystals implied that Cu doping can strengthen the multiscale inhomogeneity and polarization of PNRs. Based on the first-principles calculation, the octahedral distortions of KTN and KTN:Cu were calculated, and the results implied that Cu doping can result in a greater octahedron distortion, thus enhancing the local heterogeneity and resulting in stronger local polarization. The study will provide guidance for the growth of crystals to realize the optimization and design of functional materials. |
Author | Zhao, JiGuang Lv, XiaoLei Chen, Hang Liu, Bing Zhou, JiXue D, XiaoPing Duan, YongSheng Wang, XuPing Zhang, JianWei Liu, SiTong |
AuthorAffiliation | Graduate Schools Beijing Institute of Tracking and Telecommunications Technology Advanced Materials Institute, Qilu University of Technology Department of Aerospace Science and Technology Universitéde Lorraine, CNRS, CRAN UMR 7039 Space Engineering University Department of Electron & Optics Engineering |
AuthorAffiliation_xml | – name: Department of Aerospace Science and Technology – name: Beijing Institute of Tracking and Telecommunications Technology – name: Graduate Schools – name: Department of Electron & Optics Engineering – name: Space Engineering University – name: Universitéde Lorraine, CNRS, CRAN UMR 7039 – name: Advanced Materials Institute, Qilu University of Technology |
Author_xml | – sequence: 1 givenname: JianWei surname: Zhang fullname: Zhang, JianWei organization: Graduate Schools – sequence: 2 givenname: XiaoPing orcidid: 0000-0002-0758-2491 surname: D fullname: D, XiaoPing email: ele_phy@163.com organization: Space Engineering University – sequence: 3 givenname: JiGuang surname: Zhao fullname: Zhao, JiGuang organization: Space Engineering University – sequence: 4 givenname: YongSheng surname: Duan fullname: Duan, YongSheng organization: Space Engineering University – sequence: 5 givenname: XiaoLei surname: Lv fullname: Lv, XiaoLei organization: Beijing Institute of Tracking and Telecommunications Technology – sequence: 6 givenname: XuPing surname: Wang fullname: Wang, XuPing organization: Advanced Materials Institute, Qilu University of Technology – sequence: 7 givenname: Bing surname: Liu fullname: Liu, Bing organization: Advanced Materials Institute, Qilu University of Technology – sequence: 8 givenname: SiTong surname: Liu fullname: Liu, SiTong organization: Graduate Schools – sequence: 9 givenname: JiXue surname: Zhou fullname: Zhou, JiXue organization: Advanced Materials Institute, Qilu University of Technology – sequence: 10 givenname: Hang surname: Chen fullname: Chen, Hang organization: Universitéde Lorraine, CNRS, CRAN UMR 7039 |
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Snippet | Cu doping in the KTa1–x Nb x O3 crystal was investigated comprehensively from the dielectric measurement, global ferroelectric property, electro-optic (EO)... |
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Title | Cu-Doping-Modified Order State, Ferroelectric Property, Multiscale Inhomogeneities, and Local Structure in the Relaxor KTa1–x Nb x O3 Crystal |
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