Abstract
The nanoscale structural, compositional, and magnetic properties are examined for annealed MnAu nanoclusters. The MnAu clusters order into the L10 structure, and monotonic size-dependences develop for the composition and lattice parameters, which are well reproduced by our density functional theory calculations. Simultaneously, Mn diffusion forms 5 Å nanoshells on larger clusters inducing significant magnetization in an otherwise antiferromagnetic system. The differing atomic mobilities yield new cluster nanostructures that can be employed generally to create novel physical properties.
Original language | English (US) |
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Pages (from-to) | 1362-1368 |
Number of pages | 7 |
Journal | Nano Letters |
Volume | 14 |
Issue number | 3 |
DOIs | |
State | Published - Mar 12 2014 |
Keywords
- Bimetallic nanoparticles
- Ostwald ripening
- annealing
- phase transformation
- structure-property correlation
- structure/composition/morphology evolution
ASJC Scopus subject areas
- Bioengineering
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
- Mechanical Engineering