| Original Articles |
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Acoustic Imaging Frequency Dynamics of Ferroelectric Domains by Atomic Force Microscopy |
| ZHAO Kun-Yu1, ZENG Hua-Rong1, SONG Hong-Zhang1, HUI Sen-Xing1, LI Guo-Rongv1, YIN Qing-Rui1, Kiyoshi Shimamura2, Chinna Venkadasamy Kannan2, Encarnacion Antonia Garcia Villora2, Shunji Takekawa2, Kenji Kitamura2 |
| 1State Key Lab of High Performance Ceramics and Superfine Structures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 2000502Optronic Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan |
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| Cite this article: |
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ZHAO Kun-Yu, ZENG Hua-Rong, SONG Hong-Zhang et al 2008 Chin. Phys. Lett. 25 3429-3432 |
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Abstract We report the acoustic imaging frequency dynamics of ferroelectric domains by low-frequency acoustic probe microscopy based on the commercial atomic force microscopy. It is found that ferroelectric domain could be firstly visualized at lower frequency down to 0.5kHz by AFM-based acoustic microscopy. The frequency-dependent acoustic signal revealed a strong acoustic response in the frequency range from 7kHz to 10kHz, and reached maximum at 8.1kHz. The acoustic contrast mechanism can be ascribed to the different elastic response of ferroelectric microstructures to local elastic stress fields, which is induced by the acoustic wave transmitting in the sample when the piezoelectric transducer is vibrating and exciting acoustic wave under ac electric fields due to normal piezoelectric effects.
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| Keywords:
77.84.-s
77.84.Dy
77.80.Dj
07.78.+s
07.79.Lh
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Received: 23 June 2008
Published: 29 August 2008
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| PACS: |
77.84.-s
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(Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials)
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77.84.Dy
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77.80.Dj
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(Domain structure; hysteresis)
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07.78.+s
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(Electron, positron, and ion microscopes; electron diffractometers)
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07.79.Lh
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(Atomic force microscopes)
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