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Deposition of Pb(Zr,Ti)O3-Thin Films on Substrates with Shape Memory Effect

Published online by Cambridge University Press:  10 February 2011

W. Biegel
Affiliation:
Universität Augsburg, Institut für Physik, D-86135 Augsburg, Germany
R. Klarmann
Affiliation:
Universität Augsburg, Institut für Physik, D-86135 Augsburg, Germany
M. Kuhn
Affiliation:
Universität Augsburg, Institut für Physik, D-86135 Augsburg, Germany
B. Wörz
Affiliation:
Universität Augsburg, Institut für Physik, D-86135 Augsburg, Germany
B. Stritzker
Affiliation:
Universität Augsburg, Institut für Physik, D-86135 Augsburg, Germany
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Abstract

Pulsed Laser Deposition (PLD) was used to deposit La-doped Pb(Zr,Ti)O3 (PZT) thin films onto NiTi foils. The substrate alloy with composition Ni50Ti50 shows a strong shape memory effect with a transition temperature of about 80°C. This simple bicomponental system could have the potential of an actuator device (NiTi shows a strain up to 5 % during thermal cycling) with an inherent sensorial component (PZT) for the generated elongation. The deposited ceramic films were characterized with respect to their structural properties (XRD) and their ferroelectric behavior (P-E hysteresis). Under certain deposition conditions the growth of pure perovskite PZT on the polycrystalline shape memory alloy was observed. The growth morphology of PZT on NiTi was compared to the one of PZT on single crystalline substrates whereas no distinctive texture of the films on NiTi could be found. The ferroelectric behavior of the PZT films depend on the stage of bending of the film-substrate compound.

Type
Research Article
Copyright
Copyright © Materials Research Society 2000

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