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Optimized pyroelectric properties of 0-3 composites of PZT particles in polyurethane doped with lithium perchlorate.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control (2008-02-16)
Bernd Ploss, Markus Krause
RÉSUMÉ

A substantial improvement in the performance of pyroelectric 0-3 composites of ceramic particles in a polymer matrix has been achieved by doping the polymer matrix material. Readily prepared and polarized films with various volume fractions of lead zirconate-titanate (PZT) particles in polyurethane have been doped in a solution of lithium perchlorate in acetone to increase the conductivity. With an appropriate conductivity, the dielectric permittivities of the ceramic particles and the polymer matrix become matched, resulting in an improvement of the pyroelectric coefficient from about 6 microC/(m(2)K) to about 50 microC/(m(2)K). The experimental results are explained by theoretical predictions.

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Sigma-Aldrich
Lithium perchlorate, ACS reagent, ≥95.0%
Sigma-Aldrich
Lithium perchlorate, battery grade, dry, 99.99% trace metals basis
Sigma-Aldrich
Lithium perchlorate, 99.99% trace metals basis
Sigma-Aldrich
Lithium perchlorate, purum p.a., ≥98.0% (calc. based on dry substance, T), powder