Nanocrystalline Complex Oxides Prepared by Mechanochemical Reactions
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Herrmann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen (Germany)
- VOLKSWAGEN AG, 38436 Wolfsburg (Germany)
- Institute of Inorganic Chemistry, Academy of Sciences of Czech Republic, 25068 Rez (Czech Republic)
- Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstrasse 3-3A, 30167 Hannover (Germany)
- Institute of Physical and Theoretical Chemistry, Braunschweig University of Technology, Hans-Sommer-Strasse 10, 38106 Braunschweig (Germany)
The preparation of complex oxides by the conventional solid-state (ceramic) route requires a number of stages, including homogenization of the powder precursors, compaction of the reactants, and finally prolonged heat treatment at considerably elevated temperatures under controlled oxygen fugacity. One goal of modern materials research and development has been to identify simpler processing schemes that do not rely upon high-temperature treatments for inducing solid-state reactions. At present, mechanochemical methods become widely used for the preparation of nanocrystalline materials due to their relative simplicity and availability. In this work, selected examples of the preparation of nanoscale complex oxides via single-step mechanochemical routes are presented. Nuclear spectroscopic methods are employed to follow the mechanically induced formation of nanooxides and to characterize the nonequilibrium structural state of the resulting nanophases at the atomic level.
- OSTI ID:
- 21410587
- Journal Information:
- AIP Conference Proceedings, Vol. 1258, Issue 1; Conference: International conference on Moessbauer spectroscopy in materials science, Liptovsky Jan (Slovakia), 31 Jan - 5 Feb 2010; Other Information: DOI: 10.1063/1.3473905; (c) 2010 American Institute of Physics; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Structural and magnetic properties of nanocrystalline Bi{sub 1-x}La{sub x}FeO{sub 3} (0.0 ≤ x ≤ 0.4) synthesized by a mechanochemical route
Mechanochemical Nonhydrolytic Sol–Gel-Strategy for the Production of Mesoporous Multimetallic Oxides