Dresden 2009 – scientific programme

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MM: Fachverband Metall- und Materialphysik

MM 20: Poster Session I

MM 20.18: Poster

Tuesday, March 24, 2009, 14:45–16:30, P4

The relationship between the sinter-atmosphere and the phase modification of TiO₂ at high temperatures — •Nicole Pfeiffer, Abdelilah Lahmar, Salah Habouti, Matthias Dietze, Claus-Henning Solterbeck, and Mohammed Es-Souni — Institute for Materials and Surface Technology, University of Applied Sciences Kiel, Germany

In this work we generated TiO₂-nano particles on Si-substrate by solution deposition from a precursor. The films were treated under different atmospheres at ∼800^∘C to control the phase formation. It is shown by means of Raman scattering that anatase polymorph forms preferentially in reducing atmosphere, instead of the thermodynamically stable rutile phase. The results are discussed in terms of specific defect structures that could form in the anatase phase.