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Piezoelectric Response of Nanoscale PbTiO3 in Composite PbTiO3-CoFe2O4 Epitaxial Films



Igor Levin, Tan Zhuopeng, Alexander Roytburd, Katyayani Seal, Brian Rodriguez, Stephen Jesse, Sergei Kalinin, Art Baddorf


Piezoelectric properties of PbTiO3 in 1/3PbTiO3-2/3CoFe2O4 transverse epitaxial nanostructures on differently oriented SrTiO3 were analyzed using conventional and switching-spectroscopy piezoelectric force microscopy. The results confirmed that the individual PbTiO3 nanocolumns in the CoFe2O4 matrix exhibit a detectable piezoelectric response regardless of substrate orientation. For the {100} and {110} orientations, a bias of 10V produced ferroelectric domain switching; however, no switching was observed for the {111} films. Small values of piezoelectric constants dzz(100) 11 pm/V, dzz(110) 5 pm/V, and dzz(111) 3 pm/V are attributed to the weak intrinsic response of the nano -PbTiO3 under the strong mechanical and depolarizing-field constraints in the composite films.
Applied Physics Letters


piezoelectrics, nanoscale, epitaxial films


Levin, I. , Zhuopeng, T. , Roytburd, A. , Seal, K. , Rodriguez, B. , Jesse, S. , Kalinin, S. and Baddorf, A. (2008), Piezoelectric Response of Nanoscale PbTiO3 in Composite PbTiO3-CoFe2O4 Epitaxial Films, Applied Physics Letters, [online], (Accessed May 22, 2024)


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Created August 15, 2008, Updated February 19, 2017