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Article Dans Une Revue Physical Review B Année : 2020

Phase diagram of a three-dimensional dipolar model on an fcc lattice

Résumé

The magnetic phase diagram at zero external field of an ensemble of dipoles with uniaxial anisotropy on a FCC lattice is investigated from tempered Monte Carlo simulations. The uniaxial anisotropy is characterized by a random distribution of easy axes and its magnitude λ u is the driving force of disorder and consequently frustration. The phase diagram, separating the paramagnetic, ferromagnetic, quasi long range ordered ferromagnetic and spin-glass regions is thus considered in the temperature, λ u plane. This system is aimed at modeling the magnetic phase diagram of supracrystals of magnetic nanoparticles.
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Dates et versions

hal-03000085 , version 1 (11-11-2020)

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Vincent Russier, Juan J Alonso, I Lisiecki, A T Ngo, C Salzemann, et al.. Phase diagram of a three-dimensional dipolar model on an fcc lattice. Physical Review B, 2020, 102, ⟨10.1103/PhysRevB.102.174410⟩. ⟨hal-03000085⟩
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