Thermally-Induced Loss of Piezoelectricity in Ferroelectric Na0.5Bi0.5TiO3-BaTiO3

Abstract

The loss of piezoelectricity in ferroelectric sodium bismuth titanate (NBT) in solid solution with barium titanate ((1-x)NBT-xBT) is studied by means of thermal depoling and Raman spectroscopy. In the range 0 </= x </= 13%, the highest thermal stability of the piezoelectric coefficients is found in x = 13%, for which a longitudinal piezoelectric coefficient of 118 pC/N was nearly temperature-independent up to a maximum temperature of 165 deg C. The composition nearest the morphotropic phase boundary, x = 6%, exhibited the lowest thermal depoling temperature of 107 deg C. Depoling of this composition is suggested to arise from a second order phase transition evidenced in the temperature-dependent Raman spectra.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2014
Accession Number
ADA602944

Entities

People

  • Elena Aksel
  • Humberto Foronda
  • Jacob L. Jones
  • Jennifer S. Forrester
  • Marco Deluca

Organizations

  • University of Florida

Tags

Communities of Interest

  • Human Systems

DTIC Thesaurus Topics

  • Bismuth Titanate
  • Chemistry
  • Electron Microscopy
  • Engineering
  • Materials
  • Materials Science
  • Phase Diagrams
  • Phase Transformations
  • Piezoelectric Materials
  • Piezoelectricity
  • Raman Spectra
  • Raman Spectroscopy
  • Spectra
  • Spectroscopy
  • Thermal Stability
  • Titanates
  • Transition Temperature

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.