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Título del libro: Synthesis, Characterization And Application Of Smart Materials
Título del capítulo: Electromechanical imaging of ferroelectric and piezoelectric materials

Autores UNAM:
ALEJANDRO HEREDIA BARBERO;
Autores externos:

Idioma:
Inglés
Año de publicación:
2012
Resumen:

Ferroelectrics and are a subclass of piezoelectrics, namely, materials that experience mechanical deformation under applied voltage or charging under mechanical force. The piezoelectric character of Materials yields a novel degree of freedom in designing devices for modern micro- and nanoelectronic applications. Naturally, this property has to be studied at the nanoscale as the size of the tubular structures ranges from 50 nm to several microns. The available methods mainly include those based on the Scanning Probe Microscopy, such as PFM - Piezoresponse Force Microscopy. In the chapter, we describe fundamentals and recent advances in PFM, and the nanoscale electromechanical properties of several important ferroelectric ceramic materials widely used in memory and microelectromechanical systems applications. Finally, applications of PFM to dimensionally confined ferroelectrics are demonstrated. The potential of PFM for studying local electromechanical phenomena in polycrystalline ferroelectric films where defects and other inhomogeneities are essential for the interpretation of their macroscopic properties is illustrated. © 2012 by Nova Science Publishers, Inc. All rights reserved.


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