Title :
Giant Diamagnetism in AuFe Nanoparticles
Author :
Wu, Jun-Hua ; Min, Ji Hyun ; Liu, Hong-Ling ; Cho, Ji Ung ; Kim, Young Keun
Author_Institution :
Res. Inst. of Eng. & Technol., Korea Univ., Seoul
fDate :
6/1/2009 12:00:00 AM
Abstract :
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.
Keywords :
diamagnetism; gold alloys; iron alloys; nanoparticles; spin-orbit interactions; twin boundaries; Au0.5Fe0.5; giant diamagnetism; heterogeneous elemental composition; modified potential energy; multifunctional alloy nanoparticles; peculiar disordered microstructure; polyol process; shrinking dimension; spin-orbital interactions; twin microstructures; zero-field cooled process; AuFe; giant diamagnetism; nanoparticle; potential energy; spin-orbital interaction;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2009.2018604
