| Title | Structural and Magnetic Evolution of Bimetallic MnAu Clusters Driven by Asymmetric Atomic Migration |
| Publication Type | Journal Article |
| Year of Publication | 2014 |
| Authors | Wei, XH, Zhou, RL, Lefebvre, W, He, K, Le Roy, D, Skomski, R, Li, XZ, Shield, JE, Kramer, MJ, Chen, S, Zeng, XC, Sellmyer, DJ |
| Journal | Nano Letters |
| Volume | 14 |
| Pagination | 1362-1368 |
| Date Published | 03 |
| Type of Article | Article |
| ISBN Number | 1530-6984 |
| Accession Number | WOS:000335720300041 |
| Keywords | annealing, Bimetallic nanoparticles, core-shell nanoparticles, evolution, fept nanoparticles, fuel-cell, gold, manganese, nanocrystals, Ostwald ripening, particles, phase transformation, size, structure-property correlation, structure/composition/morphology, transition |
| 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 angstrom 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. |
| DOI | 10.1021/nl404412w |
| Custom 1 | Structures and Dynamics |
