Large-Signal Characterization of PMN-PT-Ba (90/10/3)

Abstract

Large-signal measurements are reported for the relaxor ferroelectric, lead magnesium niobate-lead titanate (PMN-PT-Ba, 90/10/3), manufactured by Lockheed-Martin. The material has been formulated to produce optimal performance at 5 degrees Centigrade for application in sonar transducers. Charge and strain measurements were taken at 5 deg and 23 deg C on a material sample (2x2x10mm) mechanically loaded with 2, 4, 6, 8, and 10 ksi of compressive stress. The sample was electrically dc biased and driven with 5 cycle, 10 Hz pulses to a peak electric field of 2 MV/m. Values for the piezoelectric coefficient, d33, electrical permittivity, epsilon 33T, and elastic compliance, S33E, were computed from the measurement data. These three parameters determine the coupling factor, k33, which indicates the effectiveness of the material to convert electrical energy to mechanical energy. For the mechanical loads considered, k33 varied from 0.49 to 0.51 at 5 deg C, and from 0.44 to 0.49 at 23 deg C.

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Document Details

Document Type
Technical Report
Publication Date
Oct 20, 1997
Accession Number
ADA640710

Entities

People

  • James M. Powers
  • Mark B. Moffett
  • Robert S. Janus

Organizations

  • Naval Undersea Warfare Center

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Charge Density
  • Coefficients
  • Couplings
  • Electric Fields
  • Electric Power
  • Electromagnetic Fields
  • Energy
  • Lead Titanates
  • Materials
  • Measurement
  • Mechanical Energy
  • Modulus Of Elasticity
  • Piezoelectric Crystals
  • Sonar Transducers
  • Strain Gages
  • Transducers
  • Undersea Warfare

Readers

  • Materials Science and Engineering.
  • Mathematics or Statistics
  • Mechanical Engineering/Mechanics of Materials.