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4 papers · 2 filters
Magnetic relaxation in terms of microscopic energy barriers in a model of dipolar interacting nanoparticles
Oscar Iglesias, Amilcar Labarta
The magnetic relaxation and hysteresis of a system of single domain particles with dipolar interactions are studied by Monte Carlo simulations. We model the system by a chain of He…
Dislocation avalanche correlations
Jerome Weiss, M. -Carmen Miguel
Recently, mechanical tests on ice as well as dislocation dynamics simulations have revealed that plastic flow displays a scale-free intermittent dynamics characterized by dislocati…
Role of surface disorder on the magnetic properties and hysteresis of nanoparticles
Oscar Iglesias, Amilcar Labarta
We present the results of Monte Carlo simulations of a model of a single maghemite ferrimagnetic nanoparticle including radial surface anisotropy distinct from that in the core wit…
Shape and surface anisotropy effects on the hysteresis of ferrimagnetic nanoparticles
Oscar Iglesias, Amilcar Labarta
We present the results of Monte Carlo simulations of a model of a single maghemite ferrimagnetic nanoparticle with the aim to clarify the role played by the increased anisotropy at…