BSPT- and PZNT- based high frequency single element transducers for medical ultrasonic imaging

Sorah Rhee, Shujun Zhang, Gilbert Molingou, Thomas Shrout, Kirk Shung

Research output: Contribution to conferencePaper

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 languageEnglish (US)
Pages315-318
Number of pages4
StatePublished - Dec 1 2002
EventProceedings of the 13th IEEE International Symposium on Applications of Ferroelectronics - Nara, Japan
Duration: May 28 2002Jun 1 2002

Other

OtherProceedings of the 13th IEEE International Symposium on Applications of Ferroelectronics
CountryJapan
CityNara
Period5/28/026/1/02

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Rhee, S., Zhang, S., Molingou, G., Shrout, T., & Shung, K. (2002). BSPT- and PZNT- based high frequency single element transducers for medical ultrasonic imaging. 315-318. Paper presented at Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectronics, Nara, Japan.