| Presentation | 2002/9/13 Broadband Ultrasonic Transducers Using a LiNbO_3 Plate with a Ferroelectric Inversion Layer Kentaro FUKAZAWA, Kiyoshi NAKAMURA, Ken YAMADA, Shigemi SAITO, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have found a domain inversion phenomenon induced by simple heat treatment of LiNbO_3. In such a piezoelectric plate with an inversion layer, even-order thickness-extensional modes as well as odd-order modes can be excited piezoelectrically. Therefore, the ultrasonic transducer using such a piezoelectric plate is expected to operate in a wide frequency range. In this paper it is shown that broadband ultrasonic transducers can be obtained at certain thickness ratios of inversion layer to plate and that the transducer characteristics differ depending on whether the inversion layer is on the front side or on the backside. The broadband characteristics are experimentally demonstrated by fabricating transducers with 9MHz or 75MHz center frequency using a 36° rotated Y-cut LiNbO_3 plate with a ferroelectric inversion layer. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | ultrasonic transducer / LiNbO_3 / domain inversion / piezoelectrics |
| Paper # | US2002-59 |
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| Conference Information | |
| Committee | US |
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| Conference Date | 2002/9/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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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) | Broadband Ultrasonic Transducers Using a LiNbO_3 Plate with a Ferroelectric Inversion Layer |
| Sub Title (in English) | |
| Keyword(1) | ultrasonic transducer |
| Keyword(2) | LiNbO_3 |
| Keyword(3) | domain inversion |
| Keyword(4) | piezoelectrics |
| 1st Author's Name | Kentaro FUKAZAWA |
| 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 |
| 3rd Author's Name | Ken YAMADA |
| 3rd Author's Affiliation | Graduate School of Engineering, Tohoku University |
| 4th Author's Name | Shigemi SAITO |
| 4th Author's Affiliation | Faculty of Marine Science and Technology, Tokai University |
| Date | 2002/9/13 |
| Paper # | US2002-59 |
| Volume (vol) | vol.102 |
| Number (no) | 308 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |