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

P. E. Jönsson, S. Felton, P. Svedlindh, P. Nordblad, Mikkel Fougt Hansen

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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 (Fe0.15Ni0.85)(75)P16B6Al3.
Original languageEnglish
JournalPhysical Review B
Volume64
Issue number21
Pages (from-to)212402
ISSN2469-9950
DOIs
Publication statusPublished - 2001

Bibliographical note

Copyright (2001) American Physical Society

Keywords

  • RELAXATION
  • PARTICLE SYSTEM
  • ESCAPE RATES
  • PHASE
  • NONEQUILIBRIUM DYNAMICS

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