| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Roles of Nano-Domain Switching and Non-180$^{\circ}$ Domains in Enhancing Local Piezoelectric Responses of Highly (100)-Oriented Pb(Zr$_{0.60}$Ti$_{0.40}$)O$_{3}$ Thin Films |
| Chen-Fei Jin1, Si-Qi Zhang1**, Zhi-Qiang Shen1, Wei-Li Li2 |
1School of Physics, Harbin Institute of Technology, Harbin 150001
2School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001
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| Cite this article: |
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Chen-Fei Jin, Si-Qi Zhang, Zhi-Qiang Shen et al 2019 Chin. Phys. Lett. 36 107701 |
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Abstract Ferroelectric Pb(Zr$_{0.60}$Ti$_{0.40}$)O$_{3}$ thin films deposited on the niobium-doped SrTiO$_{3}$ and Pt (111)/Ti/SiO$_{2}$/Si substrates are fabricated by a sol-gel method. X-ray diffraction indicates that the films have a 'cube-on-cube' growth with highly (100) preferred orientation and good surface qualities. Using piezoelectric force microscopy, we investigate domain structures and butterfly amplitude loops of ferroelectric thin films. The results indicate that the film deposited on Nb:SrTiO$_{3}$ has both kinds of 180$^{\circ}$ polarizations perpendicular or parallel to the surface while the film deposited on Pt/Ti/SiO$_{2}$/Si has irregular phase differences. Excellent piezoelectric polarization are observed in the films on niobium-doped SrTiO$_{3}$ with local $d_{33}^{\ast}$ values around 45 pm/V three times more than that of the films around 13 pm/V deposited on Pt (111)/Ti/SiO$_{2}$/Si. Our findings emphasize that nano-domain switching ability and non-180$^{\circ}$ domains will contribute significantly to enhance piezoelectric responses of ferroelectric thin films.
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Received: 05 July 2019
Published: 21 September 2019
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| PACS: |
77.55.fg
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(Pb(Zr,Ti)O3-based films)
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77.65.-j
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(Piezoelectricity and electromechanical effects)
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77.55.-g
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(Dielectric thin films)
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| Fund: Supported by the National Natural Science Foundation of China under Grant No 11504071, and the Key Laboratory of Micro-optics and Photonic Technology of Heilongjiang Province for PFM Measurement during the Research. |
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