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arXiv · 2011.00879

Phase diagram of a three-dimensional dipolar model on a FCC lattice

V. Russier·Juan J. Alonso·I. Lisiecki·A. T. Ngo·C. Salzemann·S. Nakamae·C. Raepsaet
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Abstract

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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V. Russier, Juan J. Alonso, I. Lisiecki, A. T. Ngo, C. Salzemann, S. Nakamae, C. Raepsaet. 2020-11-10. Phase diagram of a three-dimensional dipolar model on a FCC lattice. https://doi.org/10.1103/physrevb.102.174410

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