Regensburg 2007 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

DF: Fachverband Dielektrische Festkörper

DF 11: Poster Session

DF 11.14: Poster

Donnerstag, 29. März 2007, 14:30–18:00, Poster C

X-Ray Studies of Structure Changes of Ferroelectric Thin PbTiO₃ Films under DC Voltage — •Valentin Iov¹, Ulrich Gebhardt¹, Chang Kim¹, Peter Wochner¹, and Helmut Dosch^1,2 — ¹Max-Planck-Institute for Metals Research, Heisenbergstr. 3, 70569 Stuttgart, Germany — ²Institute for Theoretical and Applied Physics, Pfaffenwaldring 57, 70569 Stuttgart, Germany

This contribution investigates the structural changes of ferroelectric films of PbTiO₃ of various thicknesses under a static DC voltage. The samples consist of a PbTiO₃ film grown on (001) oriented SrTiO₃ using SrRuO₃ as a buffer layer and as bottom electrode, the top electrode consists of Au patches of various sizes. After a short DC voltage was applied to the heterostructure, we measured the intensity changes around the (00L) Bragg reflections. The influence of the growth parameters, the choice of the material and the size of the top electrode on these effects will be discussed.