Physics – Condensed Matter – Materials Science
Scientific paper
2007-05-23
Physics
Condensed Matter
Materials Science
54 pages, 10 figures, 2 appendices, to be submitted to J. Appl. Phys
Scientific paper
10.1063/1.2785824
Signal formation mechanism of Piezoresponse Force Microscopy of piezoelectric surface layers and thin films on stiff and elastically matched substrates is analyzed and thickness dependence of effective piezoelectric response, object transfer function components and Rayleigh two-point resolution are derived. Obtained exact series and simple Pade approximations can be applied for the effective piezoresponse analytical calculations in the case of films capped on different substrates. The effective piezoresponse is thickness dependent for piezoelectric films on substrates with low dielectric permittivity (extrinsic size effect), whereas the thickness dependence is essentially suppressed for giant permittivity or metallic substrates. Thus implications of analysis for ferroelectric data storage and device applications are discussed.
Eliseev Eugene A.
Kalinin Sergei V.
Morozovska Anna N.
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