CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Observation of Ferroelastic and Ferroelectric Domains in AgNbO$_{3}$ Single Crystal |
Wei Zhao1, Zhengqian Fu2*, Jianming Deng1, Song Li3, Yifeng Han4, Man-Rong Li4, Xueyun Wang1*, and Jiawang Hong1* |
1School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China 2The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China 3Key Laboratory of Inorganic Functional MRRaterials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China 4Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
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Cite this article: |
Wei Zhao, Zhengqian Fu, Jianming Deng et al 2021 Chin. Phys. Lett. 38 037701 |
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Abstract Compared to AgNbO$_{3}$ based ceramics, the experimental investigations on the single crystalline AgNbO$_{3}$, especially the ground state and ferroic domain structures, are not on the same level. Here, based on successfully synthesized AgNbO$_{3}$ single crystal using a flux method, we observed the coexistence of ferroelastic and ferroelectric domain structures by a combination study of polarized light microscopy and piezoresponse force microscopy. This finding may provide a new aspect for studying AgNbO$_{3}$. The result also suggests a weak electromechanical response from the ferroelectric phase of AgNbO$_{3}$, which is also supported by the transmission electron microscope characterization. Our results reveal that the AgNbO$_{3}$ single crystal is in a polar ferroelectric phase at room temperature, clarifying its ground state which is controversial from the AgNbO$_{3}$ ceramic materials.
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Received: 08 December 2020
Published: 02 March 2021
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PACS: |
77.80.Dj
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(Domain structure; hysteresis)
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77.84.Ek
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(Niobates and tantalates)
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77.84.-s
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(Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials)
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78.20.Fm
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(Birefringence)
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Fund: Supported by the National Natural Science Foundation of China (Grant Nos. 11572040, 11604011 and 51972028), the National Key Research and Development Program of China (Grant No. 2019YFA0307900), Beijing Natural Science Foundation (Grant No. Z190011), and the Technological Innovation Project of Beijing Institute of technology. |
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