Accession Number:

ADA277007

Title:

Electrostrictive Ceramics for Underwater Transducer Applications

Descriptive Note:

Interim rept.

Corporate Author:

NAVAL RESEARCH LAB ORLANDO FL UNDERWATER SOUND REFERENCE DETACHMENT

Personal Author(s):

Report Date:

1994-02-01

Pagination or Media Count:

10.0

Abstract:

The electromechanical properties of two electrostrictive materials designed for use in underwater acoustic applications are determined as functions of temperature and electric field. The materials are 0.859PbMgl3Nb23O3-0 . 141 PbTiO3 doped with 2.5 SrTiO3 or BaTiO3. Dielectric properties are determined as functions of temperature and electric field. The equivalent piezoelectric coefficients were found as functions of temperature to be equal to or superior to the lead zirconate-titanate ceramics at very modest dc bias fields 2 kVcm at temperatures in the range from 10 at 35 deg C. Outside of this temperature range, the piezoelectric and dielectric coefficients decrease rapidly. Electromechanical losses were found to be sufficiently small for the SrTiO3 composition but not the BaTiO3 composition.

Subject Categories:

  • Inorganic Chemistry
  • Acoustics
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE