Phase diagram of a three-dimensional dipolar model on a FCC lattice
Abstract
The magnetic phase diagram of a uniaxially anisotropic FCC lattice of dipoles with random easy axes is explored using tempered Monte Carlo simulations, revealing regions of paramagnetism, ferromagnetism, quasi long-range order, and spin glass behavior.
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 lambda_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, lambda_u plane. This system is aimed at modeling the magnetic phase diagram of supracrystals of magnetic nanoparticles.
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