Structural and magnetic evolution of bimetallic MnAu clusters driven by asymmetric atomic migration.
basic_science · Level V
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- Record sourced from PubMed, PMID 24517293.
- Also identified by DOI 10.1021/nl404412w.
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Abstract
The nanoscale structural, compositional, and magnetic properties are examined for annealed MnAu nanoclusters. The MnAu clusters order into the L1(0) 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.