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

P E Jonsson, S Felton, P Svedlindh, P Nordblad, M F Hansen

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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
Article number212402
Number of pages4
JournalPhysical Review B (Condensed Matter)
Issue number21
Early online date02 Nov 2001
Publication statusPublished - 01 Dec 2001

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