Dresden 2011 – wissenschaftliches Programm

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DF: Fachverband Dielektrische Festkörper

DF 10: Nano- and microstructured dielectrics

DF 10.1: Hauptvortrag

Mittwoch, 16. März 2011, 10:15–10:55, MÜL Elch

Ferroelectric domains: Investigation, fabrication, and applications — •Elisabeth Soergel — Physikalisches Institut, Universität Bonn

Ferroelectric materials posses a permanent spontaneous polarization that can be reversed by the application of an electric field. In this way, ferroelectric domain patterns are fabricated which can be used for various applications ranging from efficient frequency conversion to high-density data storage. Although known since more than half a century, there are still open questions regarding ferroelectrics: For example the physical properties of the domain walls are still under discussion.

I will introduce ferroelectric materials and their applications, the fabrication of domain patterns and their investigation by piezoresponse force microscopy will constitute the principal part in my talk. Finally, as an example for a new application of ferroelectric domains, I will outline how they can be used to fabricate *m-sized single crystal structures suitable for photonic micro-components.