Piezoelectric properties of micro-machined cantilever PLZT thin films

Chih Hsing Cheng*, Yuhuan Xu, Hilary B. Cherry, Justine Tseng, Greg Um, Weijia Wen, John D. Mackenzie

*Corresponding author for this work

Research output: Contribution to journalJournal Articlepeer-review

6 Citations (Scopus)

Abstract

A cantilever actuator of piezoelectric thin films was fabricated on Si wafer for micro-electro-mechanical-system (MEMS) devices such as micro mirror array and accelerometer. The piezoelectric thin films, La doped lead zirconate titanate, (PLZT) were prepared on Pt/Ti/SiO2/Si-wafer by the sol-gel technique. Geometrically flat cantilevers were obtained using a stress balance layer. Electrical properties, dielectric constants and breakdown fields, of PLZT thin film were studied. The piezoelectric cantilever tip displacement, 6μm, was directly measured by laser interferometer on a 90 μm long cantilever at 10V.

Original languageEnglish
Pages (from-to)159-164
Number of pages6
JournalFerroelectrics
Volume232
Issue number1-4
DOIs
Publication statusPublished - 1999
Externally publishedYes

Keywords

  • MEMS
  • PZT
  • Piezoelectric

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