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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
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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- Copyright © Materials Research Society 1992