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

M. F. Hansen; P. E. J\"onsson; P. Nordblad; P. Svedlindh; S. Felton

arxiv: cond-mat/0106530 · v1 · submitted 2001-06-26 · ❄️ cond-mat.mtrl-sci · cond-mat.dis-nn

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

P. E. J\"onsson , S. Felton , P. Svedlindh , P. Nordblad , M. F. Hansen This is my paper

classification ❄️ cond-mat.mtrl-sci cond-mat.dis-nn

keywords magneticagingbehaviorcollectivefe-cfieldfieldsinteracting

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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 (Fe_{0.15}Ni_{0.85})_{75}P_{16}B_6Al_3.

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

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