Observation of superspin glass state in magnetically textured ferrofluid (gamma-Fe2O3)

Details Observation of superspin glass state in magnetically textured ferrofluid (gamma-Fe2O3) Observation of superspin glass state in magnetically textured ferrofluid (gamma-Fe2O3)

2008-12-22

arxiv.org/abs/0812.4282v2

Journal of Applied Physics 105 (2009) 07E318

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1063/1.3072383

Magnetic properties in a magnetically textured ferrofluid made out of interacting maghemite (gamma-Fe2O3) nanoparticles suspended in glycerin have been investigated. Despite the loss of uniform distribution of anisotropy axes, a superspin glass state exists at low temperature in a concentrated, textured ferrofluid as in the case of its non-textured counterpart. The onset of superspin glass state was verified from the sample's AC susceptibility. The influence of the anisotropy axis orientation on the aging behavior in the glassy states is also discussed.

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