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DF: Dielektrische Festkörper

DF 6: Nanostrukturen, Schichten und Keramiken

DF 6.1: Hauptvortrag

Donnerstag, 11. März 2004, 09:30–10:10, H11

Probing ferroelectricity at small length and short time scales — •Theo Rasing — NSRIM Institute, University of Nijmegen, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands

Future applications of ferroelectric materials in nanoelectronic or storage devices require the control and manipulations/switching of ferroelectricity on small (submicron) length scales and short (subnanosecond) time scales. These developments in turn ask for methods to probe ferroelectric properties at these length and time scales as well.

Our recent progress report in this area will be discussed, demonstrating in particular the use of scanning probe and nonlinear optical methods to investigate the static and dynamic properties of ferroelectrics with a lateral resolution down to the nanometer regime (using a scanning probe) and a time resolution down to the picosecond regime (using nonlinear optical microscopy). Finally, the possibility to combine the best of both worlds, namely the time resolution offered by femto-second lasers with the lateral resolution of scanning probe methods will be demonstrated.