Title: Distribution of impurities and minor components in nanostructured conducting oxides

Authors: Boris Straumal, Andrei Mazilkin, Peter Straumal, A. Myatiev

Addresses: Institute of Solid State Physics Russian Academy of Sciences Chernogolovka, Moscow Distr. 142432 Russia; Moscow State Institute of Steel and Alloys (Technological University), Leninsky Prospect 4 119991 Moscow, Russia. ' Institute of Solid State Physics Russian Academy of Sciences Chernogolovka, Moscow Distr. 142432 Russia. ' Moscow State Institute of Steel and Alloys (Technological University), Leninsky Prospect 4 119991 Moscow, Russia. ' Moscow State Institute of Steel and Alloys (Technological University), Leninsky Prospect 4 119991 Moscow, Russia

Abstract: Nanostructured conducting oxides are very promising for various applications like varistors (doped zinc oxide), electrolytes for the solid oxide fuel cells (ceria, zirconia, yttria), semi-permeable membranes and sensors (perovskite-type oxides). Grain boundary (GB) phases crucially determine the properties of nanograined-oxides. GB phase transformations (wetting, prewetting, pseudopartial wetting) proceed in the conducting oxides. Novel GB lines appear in the conventional bulk phase diagrams. They can be used for the tailoring of properties of nanograined-conducting oxides, particularly by using the novel synthesis method of liquid ceramics.

Keywords: nanostructures; grain boundaries; conducting oxides; phase transformations; liquid ceramics; nanotechnology.

DOI: 10.1504/IJNM.2008.018948

International Journal of Nanomanufacturing, 2008 Vol.2 No.3, pp.253 - 270

Published online: 25 Jun 2008 *

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