High pyroelectric coefficient modified lead titanate thin films deposition using gold electrode

Author

Ahmed, Mariwan ; Butler, Donald P.

Author_Institution

Dept. of Electr. Eng. & Nanotechnol. Res. & Educ. Center, Univ. of Texas at Arlington, Arlington, TX, USA

Volume

49

Issue

15

fYear

2013

fDate

July 18 2013

Firstpage

952

Lastpage

953

Abstract

Reported is the deposition and characterisation of lead zirconium titanate (PbZr_0.4Ti_0.6O₃) (PZT) and lead calcium titanate (Pb_0.7Ca_0.3Ti0₃) (PCT) deposited on a gold electrode with a gold top electrode to form a capacitor structure. Pulsed laser deposition was utilised to deposit the thin films. The thin films were characterised for their dielectric constant and loss tangent variation with temperature as well as the pyroelectric coefficient. The thin films were poled to improve the pyroelectric effect. The highest pyroelectric coefficient was found to be 280 μC/m² K for PZT film and 400 μC/m² K for the PCT film after poling.

Keywords

calcium compounds; dielectric losses; dielectric polarisation; dielectric thin films; lead compounds; permittivity; pulsed laser deposition; pyroelectricity; PZT; Pb_0.7Ca_0.3TiO₃; capacitor structure; dielectric constant; dielectric loss tangent; gold top electrode; lead calcium titanate; lead titanate thin films; lead zirconium titanate; poling; pulsed laser deposition; pyroelectric coefficient;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2013.1164

Filename

6563267