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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.118  No.1380 (August) (2010)  >  pp.640-643

Journal of the Ceramic Society of Japan
<<Previous article Vol.118  No.1380 (August) (2010)   pp.640 - 643 Next article>>

Effect of a driving electric field waveform on piezoelectric displacement of PZT thick films

Yuta KASHIWAGI1), Takashi IIJIMA2), Takashi NAKAJIMA1) and Soichiro OKAMURA1)
1) Department of Applied Physics, Faculty of Science, Tokyo University of Science
2) National Institute of Advanced Industrial Science and Technology

  Endurance properties of piezoelectric-induced longitudinal displacement for lead zirconate titanate (PZT) thick films were investigated to develop microelectromechanical systems (MEMS). A 5-µm-thick film was prepared using chemical solution deposition (CSD). Square and triangle waveforms and various frequencies of unipolar or bipolar electric fields were applied to the film. The effects of applied field switching cycles on the ferroelectric properties and longitudinal displacements were measured using a twin-laser interferometer system. Under the bipolar applied field switching condition, the remanent polarization and piezoelectric displacement decreased concomitantly with increasing applied field switching cycles, similar to fatigue behavior. The applied field switching waveform and frequency affect the fatigue profile. The piezoelectric displacement did not decrease when the unipolar square and triangle waveform were applied to the samples. These results suggest that the unipolar driven PZT thick films are applicable to MEMS devices.

PZT, Thick film, Piezoelectric, Displacement, Fatigue

Received: April 22, 2010
Accepted: July 15, 2010 , Published online: August 01, 2010
Copyright (c) 2010 The Ceramic Society of Japan



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