Strongly-interacting nanoparticle systems spin glasses

III. STRONGLY INTERACTING NANOPARTICLE SYSTEMS— SPIN-GLASS-LIKE BEHAVIOR... 

III. Strongly Interacting Nanoparticle Systems-A. Spin Glasses... 

This nanoparticle sample exhibits strong anisotropy, due to the uniaxial anisotropy of the individual particles and the anisotropic dipolar interaction. The relative timescales (f/xm) of the experiments on nanoparticle systems are shorter than for conventional spin glasses, due to the larger microscopic flip time. The nonequilibrium phenomena observed here are indeed rather similar to those observed in numerical simulations on the Ising EA model [125,126], which are made on much shorter time (length) scales than experiments on ordinary spin glasses [127]. 

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