Uniaxial stress dependence of electromechanical and dielectric properties of 0.9PMN-O.1PT electroceramics

Author

Zhao, J. ; Zhang, Q.M. ; Mueller, V.

Author_Institution

Mater. Res. Lab., Pennsylvania State Univ., University Park, PA, USA

fYear

1998

fDate

1998

Firstpage

361

Lastpage

364

Abstract

The piezoelectric and dielectric coefficients d₃₃ and K ₃₃ obtained in the electric DC biased state of electrostrictive 0.9PMN-0.1PT electroceramics show a pronounced dependence on the value of the uniaxial stress T₁ applied perpendicular to the electric field. This effect was attributed to the influence of T₁ on the response of micro-polar regions and on the field induced transformation between the micro-polar and macro-polar state of 0.9PMN-0.1PT. The application of mechanical prestress T₁ makes it possible to elevate the upper temperature limit for the use of the electroceramic in technical applications

Keywords

electromechanical effects; ferroelectric ceramics; lead compounds; permittivity; piezoceramics; PMN-PT electroceramics; PMN-PbTiO₃; PbMgO3NbO3-PbTiO3; dielectric coefficients; dielectric properties; electric DC biased state; electromechanical properties; electrostrictive PMN-PT electroceramics; field induced transformation; macro-polar state; mechanical prestress; micro-polar regions; micro-polar state; piezoelectric coefficients; uniaxial stress dependence; Capacitive sensors; Ceramics; Compressive stress; Dielectric materials; Electrostriction; Permittivity; Phase change materials; Strain measurement; Temperature dependence; Temperature distribution;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 1998. ISAF 98. Proceedings of the Eleventh IEEE International Symposium on

Conference_Location

Montreux

ISSN

1099-4734

Print_ISBN

0-7803-4959-8

Type

conf

DOI

10.1109/ISAF.1998.786708

Filename

786708