title: Structural and magnetic evolution of bimetallic MnAu clusters driven by asymmetric atomic migration.
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.
authors: Department of Physics and Astronomy, University of Nebraska , Lincoln, Nebraska 68588, United States.
authors: Xiaohui
authors: X
authors: Wei
authors: Rulong
authors: R
authors: Zhou
authors: Williams
authors: W
authors: Lefebvre
authors: Kai
authors: K
authors: He
authors: Damien
authors: D
authors: Le Roy
authors: Ralph
authors: R
authors: Skomski
authors: Xingzhong
authors: X
authors: Li
authors: Jeffrey E
authors: JE
authors: Shield
authors: Matthew J
authors: MJ
authors: Kramer
authors: Shuang
authors: S
authors: Chen
authors: Xiao Cheng
authors: XC
authors: Zeng
authors: David J
authors: DJ
authors: Sellmyer