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Piezoelectric nanoindentation

Published online by Cambridge University Press:  01 March 2006

Andrei Rar ,
G.M. Pharr ,
W.C. Oliver ,
E. Karapetian  and
Sergei V. Kalinin
Andrei Rar*
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831;and Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996
G.M. Pharr
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831;and Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996
W.C. Oliver
Affiliation:
MTS Corporation, Oak Ridge, Tennessee 37831
E. Karapetian
Affiliation:
Suffolk University, Boston, Massachusetts 02108
Sergei V. Kalinin*
Affiliation:
Condensed Material Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
*
a)Address all correspondence to these authors. e-mail: rara@ornl.gov
b)Address all correspondence to these authors. e-mail: sergei2@ornl.gov
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Abstract

Piezoelectric nanoindentation (PNI) has been developed to quantitatively address electromechanical coupling and pressure-induced dynamic phenomena in ferroelectric materials on the nanoscale. In PNI, an oscillating voltage is applied between the back side of the sample and the indenter tip, and the first harmonic of bias-induced surface displacement at the area of indenter contact is detected. PNI is implemented using a standard nanoindentation system equipped with a continuous stiffness measurement system. The piezoresponse of polycrystalline lead zirconate titanate (PZT) and BaTiO3 piezoceramics was studied during a standard nanoindentation experiment. For PZT, the response was found to be load independent, in agreement with theoretical predictions. In polycrystalline barium titanate, a load dependence of the piezoresponse was observed. The potential of piezoelectric nanoindentation for studies of phase transitions and local structure-property relations in piezoelectric materials is discussed.

Keywords

FerroelectricPiezoresponseStress/strain relations
Type
Rapid Communications
Information
Journal of Materials Research , Volume 21 , Issue 3 , March 2006 , pp. 552 - 556
Copyright
Copyright © Materials Research Society 2006

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References

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