Berlin 2008 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 21: High-k Dielectric Materials - Synthesis, Properties, Applications

DS 21.6: Vortrag

Mittwoch, 27. Februar 2008, 16:15–16:30, H 2032

Preparation, morphology and physical properties of nano-Ln_1*xSr_xMnO₃ perovskites — •Rafal J. Wiglusz¹, Wieslaw Strek¹, Dariusz Hreniak¹, Glikeria Kakali², Anna Gaki², and Miroslaw Miller³ — ¹Institute of Low Temperature and Structure Research, Polish Academy of Sciences,, ul. , Okolna 2, 50-422 Wrocław, Poland — ²Chemical Engineering Department National Technical University of Athens 9 Heroon, Polytechniou Str., 15773 Athens, Greece — ³Chemical Department, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland

The nano-Ln_1*xSr_xMnO₃ perovskites (where Ln is La, Sm or Tb) are the important materials for the Solid Oxide Fuel Cells (SOFC). In present work, the glycine/nitrate powder synthesis has been described using a unique combination of metal nitrates and glycine stoichiometrically, which produces nano-particles. The obtained nano-powders have been characterized by X-Ray Diffraction (XRD) and Transmission Electron Microscopy (TEM) studies. The effect of grain sizes of nano-crystallites on the optical, magnetic and electrical properties has been studied and discussed.