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Influence of Grain-Growth Inhibiting Dopants on the Electrophysical Properties of Rhombohedral Pyroelectric Lead Zirconate-Titanate Ceramics

Published online by Cambridge University Press:  25 February 2011

Jean-Paul Hahn  and
Gernot Kostorz
Jean-Paul Hahn
Affiliation:
ETH Zörich, Angewandte Physik, CH-8093 Zörich, Switzerland now at: Perkin-Elmer AG, CH-8700 Kösnacht, Switzerland
Gernot Kostorz
Affiliation:
ETH Zörich, Angewandte Physik, CH-8093 Zörich, Switzerland
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Abstract

The aim of this work was to develop a ceramic material exhibiting a large pyroelectric coefficient p = -dP/dT (P = polarization, T = temperature) and a low dielectric constant ∈ in order to obtain a high figure of merit F = p/∈pCp for applications in infrared temperature sensing (p denotes the sintered density of the ceramic, cp the specific heat). The influence of the dopants is paramount, and it was only possible to investigate a few promising ones. Best results were obtained for PZT 60/40 (Zr:Ti=60:40) doped with 2 mol% MnO2. The effects of various dopants and some aging results for PZT 60/40 with MnO2 are presented.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 243: Symposium G – Ferroelectric Thin Films II , 1991 , 317
Copyright
Copyright © Materials Research Society 1992

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References

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