| Presentation | 2001/9/18 Domain Structures and Piezoelectric Properties of KNbO_3 Crystals Tsuyoshi TOKIWA, Kiyoshi NAKAMURA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The electromechanical coupling factor for the thickness-extensional mode, k_t, in KNbO_3 crystal is as high as 69% for the 49.5° rotated X-cut about the Y-axis, which is the highest among known piezoelectrics. The strain vs electric-field behaviors of the pseudocubic(001)cut, which is close to the 49.5° rotated X-cut, are measured. The strain vs electric-field curves exhibit large hysteresis in a high electric-field range for as-cut single domain crystals, whereas for etched single domain crystals they exhibit good linearity even in the high electric-field range. It is shown by polarizing microscope observation and X-ray diffraction that multi-domain(001)cut crystals poled along the <001> direction have layered 90° domain structures. The strain vs electric-field curves of the polar multi-domain crystals are compared with those of single domain crystals. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | KNbO_2 / Piezoelectric / Ferroelectrics / Electromechanical Coupling Factor / Domain |
| Paper # | US2001-47 |
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| Conference Information | |
| Committee | US |
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| Conference Date | 2001/9/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Ultrasonics (US) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Domain Structures and Piezoelectric Properties of KNbO_3 Crystals |
| Sub Title (in English) | |
| Keyword(1) | KNbO_2 |
| Keyword(2) | Piezoelectric |
| Keyword(3) | Ferroelectrics |
| Keyword(4) | Electromechanical Coupling Factor |
| Keyword(5) | Domain |
| 1st Author's Name | Tsuyoshi TOKIWA |
| 1st Author's Affiliation | Graduate School of Engineering, Tohoku University() |
| 2nd Author's Name | Kiyoshi NAKAMURA |
| 2nd Author's Affiliation | Graduate School of Engineering, Tohoku University |
| Date | 2001/9/18 |
| Paper # | US2001-47 |
| Volume (vol) | vol.101 |
| Number (no) | 316 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |