Back to Search
Start Over
High-frequency ultrasonic transducer fabricated with lead-free piezoelectric single crystal.
- Source :
-
IEEE Transactions on Ultrasonics Ferroelectrics & Frequency Control . Nov2010, Vol. 57 Issue 11, p2601-2604. 0p. - Publication Year :
- 2010
-
Abstract
- High-frequency (25 MHz) ultrasonic transducers with Na0.5Bi0.5TiO3-BaTiO3 (NBT-BT) lead-free piezoelectric single crystal as the active elements are fabricated and characterized. The impedance measurement reveals that the poled [001]-oriented NBT-BT single crystal exhibits a high thickness electromechanical coefficient kt of 0.52 and a low clamped dielectric constant of 80. The -6-dB bandwidth of the transducer is 46.16% and the insertion loss at the center frequency is -31.89 dB. The good performance of the transducer indicates that the NBT-BT single crystal would be a promising lead-free material for ultrasonic transducer applications. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 08853010
- Volume :
- 57
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Ultrasonics Ferroelectrics & Frequency Control
- Publication Type :
- Academic Journal
- Accession number :
- 54886098
- Full Text :
- https://doi.org/10.1109/TUFFC.2010.1727