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Lecture

WEB Molecular Level Synthesis of InFeO3 and InFeO3/Fe2O3 Nanocomposites

Friday (25.09.2020)
10:40 - 10:55 Z: Special Symposia I
Part of:


Nanoscaled ternary oxides are of great interest with respect to their superior catalytic, magnetic and electro optical properties. Especially the ternary indium ferrite is a promising material for magneto resistive storage, although it is not well investigated so far. InFeO3 is isostructural with InMnO3 and often formed at high temperatures, showing phase transitions towards LiNbO3-type structure at 15 GPa and 1000 °C. Previously, the formation of ternary indium ferrites was achieved using multi source precursors, which often suffer from the formation of side products, such as iron and indium oxide. In contrast, metal alkoxides as single source precursors provide the accessibility of phase pure ceramics, since they carry the required atomistic ratio for materials formation inside their molecular structure. Consequently, the generation of metastable phases is controlled by the preformed metal oxygen bonds, ligand design, metal ratio and oxidation states. The formation of the indium ferrite InFeO3 as well as InFeO3/Fe2O3 composites was achieved by thermal decomposition of heterometallic indium iron alkoxides. The phase compositions were proofed by XRD measurements, SEM images revealed the generation of nanoparticles. Additionally, the magnetic properties of those particles were proofed by magnetic measurements.

Speaker:
Vanessa Nahrstedt
University of Cologne
Additional Authors:
  • Fernando Maccari
    TU Darmstadt
  • Dr. Tomas Duchoň
    Forschungszentrum Jülich
  • Dr. David Müller
    Forschungszentrum Jülich
  • Prof. Dr. Claus Michael Schneider
    Forschungszentrum Jülich
  • Prof. Dr. Sanjay Mathur
    Universität zu Köln
  • Prof. Dr. Oliver Gutfleisch
    TU Darmstadt
  • Daniel Stadler
    Universität zu Köln