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High-resolution characterization of piezoelectric ceramics by ultrasonic scanning force microscopy techniques

: Rabe, U.; Kopycinska, M.; Hirsekorn, S.; Munoz Saldana, J.; Schneider, G.; Arnold, W.


Journal of Physics. D. Applied Physics 35 (2002), S.2621-2635
ISSN: 0022-3727
ISSN: 1361-6463
Fraunhofer IZFP ()
high resolution; piezoelektrische Keramik; piezoelectric; scanning force microscopy; Ultraschall; ultrasonic

The local elastic properties and the ferroelectric domain configuration of piezoelectric ceramics have been examined by atomic force acoustic microscopy and by ultrasonic piezoelectric force microscopy. The contrast mechanisms of the two techniques are discussed. From the local contact stiffness which is obtained by evaluation of the contact resonance spectra, the elastic constants of the smple surface can be calculated. In the case of anisotropic materials these elastic constants correspond to the indentation moduli. Indentation moduli for barium titanate and for a lead zirconate-titanate ceramics were calculated theoretically and are in resonable agreement with experiments. The non-linearity of the tip-sample interaction becoms noticeable at large vibration amplitudes or large mechanical tip loads.