Measurement of d15 Shear-Mode Piezoelectric Response in PZT Thin Film

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Abstract:

Piezoelectric films using d15 shear-mode can be applied to many useful MEMS devices. The small displacement derived from the d15 shear-mode was directly observed by a SPM measurement. An isolated PZT(52/48) active part having a pair of driving Cu electrodes was processed in a 5 m-thick sputtering film. The displacement measurement of the active part and its FEM analysis suggested that the estimated d15 piezoelectric constant of the film was 590 pm/V. And, the d31 value of the film was -120 pm/V measured by a conventional cantilever method. The obtained piezoelectric constants of the PZT film are near those of bulk.

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Periodical:

Key Engineering Materials (Volumes 421-422)

Pages:

95-98

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Online since:

December 2009

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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