Electrical properties of PLZT 9.5/65/35 ceramics

Author

Furman, E. ; Gu, W. ; Cross, L.E.

Author_Institution

Pennsylvania State Univ., University Park, PA, USA

fYear

1990

fDate

6-8 Jun 1990

Firstpage

588

Lastpage

590

Abstract

Electrical properties of hot-pressed PLZT 9.5/65/35 ceramics were investigated as a function of applied voltage, temperature, and humidity. Conductivity at moderate field levels follows the Arrhenius equation with an activation energy of 1.24 eV. For the values of the electric field in the range of 15 to 80 kV/cm and temperature extending up to 150°C, electrical conductivity fits the behavior predicted by the Schottky model. Using a guarded electrode arrangement, it was determined that surface conductivity shows a greater increase with humidity than the bulk conductivity. Surface conductivity in a humid environment increases with the time of exposure and can be up to two orders of magnitude higher than conductivity in dry air

Keywords

ceramics; electrical conductivity of crystalline semiconductors and insulators; ferroelectric materials; humidity; lanthanum compounds; lead compounds; surface conductivity; Arrhenius equation; PLZT; PbLaZrO3TiO3; Schottky model; activation energy; applied voltage; bulk conductivity; ceramics; electrical conductivity; electrical properties; guarded electrode arrangement; hot-pressed; humidity; surface conductivity; temperature; Ceramics; Electric variables measurement; Electrodes; Equations; Humidity; Impurities; Insulation; Temperature; Thermal conductivity; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 1990., IEEE 7th International Symposium on

Conference_Location

Urbana-Champaign, IL

Print_ISBN

0-7803-0190-0

Type

conf

DOI

10.1109/ISAF.1990.200321

Filename

200321