Nonlinear dielectric response in piezoelectric materials for underwater transducers

N. P. Sherlock, L. M. Garten, Shujun Zhang, Thomas R. Shrout, Richard Joseph Meyer, Jr.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

SONAR transducers based on single crystal lead magnesium niobate-lead titanate (PMNT) have demonstrated improvements over conventional lead zirconate titanate ceramics. Compositional modifications to PMNT have combined the high piezoelectric coefficient (d33 > 2000 pC/N) and electromechanical coupling factor (k33 > 0.90) with the low mechanical losses (QM > 1000) of "hard" piezoelectric ceramics. The dielectric losses of single crystal PMNT have not been investigated as extensively as the mechanical losses but may significantly affect the performance of a device when water loaded. In this work, nonlinearities in the dielectric permittivity and losses have been investigated as a function of applied electric field, measurement frequency, and temperature. It is shown that electromechanically "hard" single crystals offer greater stability of the dielectric properties while maintaining a high permittivity with respect to conventional lead zirconate titanate ceramics.

Original languageEnglish (US)
Article number124108
JournalJournal of Applied Physics
Volume112
Issue number12
DOIs
StatePublished - Dec 1 2012

Fingerprint

transducers
single crystals
ceramics
permittivity
piezoelectric ceramics
niobates
frequency measurement
dielectric loss
temperature measurement
magnesium
dielectric properties
nonlinearity
electric fields
coefficients
water

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Sherlock, N. P. ; Garten, L. M. ; Zhang, Shujun ; Shrout, Thomas R. ; Meyer, Jr., Richard Joseph. / Nonlinear dielectric response in piezoelectric materials for underwater transducers. In: Journal of Applied Physics. 2012 ; Vol. 112, No. 12.
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Nonlinear dielectric response in piezoelectric materials for underwater transducers. / Sherlock, N. P.; Garten, L. M.; Zhang, Shujun; Shrout, Thomas R.; Meyer, Jr., Richard Joseph.

In: Journal of Applied Physics, Vol. 112, No. 12, 124108, 01.12.2012.

Research output: Contribution to journalArticle

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