Multifunctional Au0.5Fe0.5 alloy nanoparticles from a polyol process were investigated, showing the alloy nanostructures with the formation of a new phase and twin microstructures. Giant diamagnetism, on the order of -10-2 emu g-1 Oe-1, is observed in the zero-field cooled process of the nanoparticles, which is modeled in terms of the spin-orbital interactions tuned by the modified potential energy as a result of the shrinking dimension, peculiar disordered microstructure, and heterogeneous elemental composition.
Bibliographical noteFunding Information:
This work was supported in part by the Korea Science and Engineering Foundation through the National Research Laboratory Program (No. M10500000105-05J0000-10510), in part by the Pioneer Research Center Program (No. M10711160001-08M1116-00110), and in part by the Seoul R&BD Program (No. 10920).
- Giant diamagnetism
- Potential energy
- Spin-orbital interaction
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering