Fragility of the spin-glass-like collective state to a magnetic field in an interacting Fe-C nanoparticle system

Abstract

The effect of applied magnetic fields on the collective nonequilibrium dynamics of a strongly interacting Fe-C nanoparticle system has been investigated. It is experimentally shown that the magnetic aging diminishes to finally disappear for fields of moderate strength. The field needed to remove the observable aging behavior increases with decreasing temperature. The same qualitative behavior is observed in an amorphous metallic spin glass (Fe_{0.15}Ni_{0.85})_{75}P_{16}B_6Al_3.

5 pages, 3 figures

References in corpus (3)

• Non-equilibrium dynamics in an interacting nanoparticle system
• Numerical Study on Aging Dynamics in the 3D Ising Spin-Glass Model. I. Energy Relaxation and Domain Coarsening
• Relaxation time of weakly interacting superparamagnets

Cited by in corpus (4)

• Interparticle interaction and size effect in polymer coated magnetite nanoparticles
• Magnetization of nanomagnet assemblies: Effects of anisotropy and dipolar interactions
• AC susceptibility of an assembly of nanomagnets: combined effects of surface anisotropy and dipolar interactions
• Phase transition in a super superspin glass