Abstract
Ferroelectric single crystals with tetragonal compositions Pb(Zn1/3Nb2/3)O3-xPbTiO3 (PZNT) and high Tc (1-x)BiScO3-xPbTiO3 (BSPT) were grown by Flux technique, respectively. Dielectric and piezoelectric characterization revealed high thickness coupling coefficients. (kt > 60 %) and relatively low dielectric permittivities (ε8 < 300) qualifying them as candidates for high frequency (> 20 MHz) single element transducers. Modeling based on the KLM equivalent circuit was performed resulting in projected bandwidth > 60 % for BSPT and > 70 % for PZNT and therefore high sensitivity. Single element transducers were fabricated with suitable matching and backing layers. For a PZNT transducer with a 35 MHz center frequency, a bandwidth of ∼ 80 % was realized.
Original language | English (US) |
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Pages | 315-318 |
Number of pages | 4 |
State | Published - 2002 |
Event | Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectronics - Nara, Japan Duration: May 28 2002 → Jun 1 2002 |
Other
Other | Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectronics |
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Country/Territory | Japan |
City | Nara |
Period | 5/28/02 → 6/1/02 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering