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

doi:10.1103/PhysRevB.64.212402

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

Department of Physics

Uppsala University

Research output: Contribution to journal › Journal article › Research › peer-review

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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 language	English
Journal	Physical Review B
Volume	64
Issue number	21
Pages (from-to)	212402
ISSN	2469-9950
DOIs	https://doi.org/10.1103/PhysRevB.64.212402
Publication status	Published - 2001

Bibliographical note

Copyright (2001) American Physical Society

Keywords

RELAXATION
PARTICLE SYSTEM
ESCAPE RATES
PHASE
NONEQUILIBRIUM DYNAMICS

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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.",

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AU - Hansen, Mikkel Fougt

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