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Structure,
Disorder and Bonding of Nb-TM Laves Phases with TM = Cr, Mn, Fe,
Co
Y. Grin, A. Ormeci, D. Grüner, and G. Kreiner
The binary alloy systems Nb-TM with TM = Cr, Mn, Fe, and Co will
be investigated exemplary to study the nature of transition
metal based Laves phases. The primary objective is to understand
the phase stability and the properties of the Laves phases with
respect to the real structure ranging from atomic to mesoscopic
phenomena. To provide a basis for quantum mechanical and
thermodynamic modelling of the Laves phases the materials
preparation is followed by the determination of precise
constitutional and structural data as well as measurements of
electronic and mechanical properties. The results will then
serve as a knowledge base to enhance or to develop new concepts
to predict structure, bonding and properties of ternary Laves
phases. To achieve the scientific objectives special topics of
the research program will be investigated in close collaboration
with the following Max Planck Institutes: Festkörperforschung
(synthesis and bonding), Eisenforschung (properties and
thermodynamic modelling), and Metallforschung (crystal structure
and disorder).
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