Spin glass behavior in an interacting gamma-Fe2O3 nanoparticle system

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dc.creatorParker, D.
dc.creatorDupuis, V.
dc.creatorLadieu, F.
dc.creatorBouchaud, J. -P.
dc.creatorDubois, E.
dc.creatorPerzynski, R.
dc.creatorVincent, Eric
dc.date2008-02-28
dc.date.accessioned2026-07-07T09:32:27Z
dc.date.available2026-07-07T09:32:27Z
dc.descriptionIn this paper we investigate the superspin glass behavior of a concentrated assembly of interacting maghemite nanoparticles and compare it to that of canonical atomic spin glass systems. ac versus temperature and frequency measurements show evidence of a superspin glass transition taking place at low temperature. In order to fully characterize the superspin glass phase, the aging behavior of both the thermo-remanent magnetization (TRM) and ac susceptibility has been investigated. It is shown that the scaling laws obeyed by superspin glasses and atomic spin glasses are essentially the same, after subtraction of a superparamagnetic contribution from the superspin glass response functions. Finally, we discuss a possible origin of this superparamagnetic contribution in terms of dilute spin glass models.
dc.identifierhttps://arxiv.org/abs/0802.4184
dc.identifierhttp://arxiv.org/abs/0802.4184
dc.identifierPhysical Review B 77 (2008) 104428
dc.identifierdoi:10.1103/PhysRevB.77.104428
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/158784
dc.subjectDisordered Systems and Neural Networks
dc.titleSpin glass behavior in an interacting gamma-Fe2O3 nanoparticle system
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