Pb(Zn1/3Nb2/3)O3/PbTiO3 single-crystal piezoelectrics for ultrasonic transducers

Patrick D. Lopath, Seung Eek Park, K. Kirk Shung, Thomas R. Shrout

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations

Abstract

The Pb(Zn1/3Nb2/3)O3 (PZN)/PbTiO3 (PT) solid solution has been grown in single crystal form. The dielectric and piezoelectric properties have been determined over a wide range of compositions. Longitudinal coupling constants in this system can be maintained at near 90% for a wide range of relative permittivities, allowing a 'designer dielectric' approach to ultrasonic transducer design. The piezoelectric transducer model developed by Kimholtz, Leedom and Matthaei (KLM) was employed to first optimize transducer design points, and then to study the behavior of these materials as operational transducers. Two types of transducers were modeled and contrasted to conventional materials, a 50 MHz single element designed for ultrasound backscatter microscopy and a 5 MHz phased array element. These two transducer designs are representative of the wide range of properties available in this system by carefully choosing a composition. Extremely high piezoelectric coupling coefficients (k33 greater than 94%) and a range of dielectric constants (3000 - 5000) have been observed in these systems on the rhombohedral side of the morphotropic phase boundary (MPB). Relatively low dielectric constants (approximately 1000) and high thickness mode coupling (kt greater than 63%) were observed as typical of tetragonal formulations. A prototype single element transducer at 35 MHz was fabricated from PZN/8% PT and compared, in pulse/echo mode, to a PZT-5H transducer similar design.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages170-174
Number of pages5
ISBN (Print)081942448X
StatePublished - Dec 1 1997
EventMedical Imaging 1997: Ultrasonic Transducer Engineering - Newport Beach, CA, USA
Duration: Feb 27 1997Feb 28 1997

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume3037
ISSN (Print)0277-786X

Other

OtherMedical Imaging 1997: Ultrasonic Transducer Engineering
CityNewport Beach, CA, USA
Period2/27/972/28/97

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Pb(Zn1/3Nb2/3)O3/PbTiO3 single-crystal piezoelectrics for ultrasonic transducers'. Together they form a unique fingerprint.

  • Cite this

    Lopath, P. D., Park, S. E., Shung, K. K., & Shrout, T. R. (1997). Pb(Zn1/3Nb2/3)O3/PbTiO3 single-crystal piezoelectrics for ultrasonic transducers. In Proceedings of SPIE - The International Society for Optical Engineering (pp. 170-174). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 3037). Society of Photo-Optical Instrumentation Engineers.