Effects of rare earth doping on the piezo and pyroelectric properties of lead zirconate titanate (PZT)

Author

Goel, T.C. ; Pillai, P.K.C. ; Sharma, H.D. ; Tripathi, A.K. ; Tripathi, Anita ; Pramila, C. ; Govindan, Anil

Author_Institution

Dept. of Phys., Indian Inst. of Technol., New Delhi, India

fYear

1994

fDate

7-9 Sep 1994

Firstpage

720

Lastpage

724

Abstract

In this study we report the piezoelectric, pyroelectric and dielectric properties of rare earth (Eu³⁺, Gd³⁺. Sm³⁺, Yb³⁺, Nb⁵⁺) modified PZT ceramics. The conventional mixed oxide route was adopted for preparation of the ceramics. Samples sintered in pellet form were corona poled using a voltage of 7 kV/cm at a temperature of 100 to 200°C. Measurements of piezoelectric coefficients, pyroelectric coefficients, dielectric constant and loss are reported. Piezoelectric and pyroelectric figures of merit of these ceramics are also reported. The structural studies of these ceramics were also carried out. It is shown that doping of PZT with different rare earths in the right proportions improves their application in piezoelectric/pyroelectric devices

Keywords

dielectric losses; lead compounds; materials preparation; permittivity; piezoceramics; pyroelectricity; sintering; 100 to 200 degC; PZT; PbZrO3TiO3; ceramics; dielectric constant; dielectric loss; figures of merit; mixed oxide synthesis; piezoelectric coefficients; pyroelectric coefficients; rare earth doping; sintering; Ceramics; Corona; Dielectric loss measurement; Dielectric measurements; Doping; Loss measurement; Niobium; Pyroelectricity; Temperature; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1994. (ISE 8), 8th International Symposium on

Conference_Location

Paris

Print_ISBN

0-7803-1940-0

Type

conf

DOI

10.1109/ISE.1994.515217

Filename

515217