2134/12314 K. Lichtner K. Lichtner Andrew Archer Andrew Archer S.H.L. Klapp S.H.L. Klapp Phase separation dynamics in a two-dimensional magnetic mixture Loughborough University 2013 untagged Mathematical Sciences not elsewhere classified 2013-05-17 13:38:21 Journal contribution https://repository.lboro.ac.uk/articles/journal_contribution/Phase_separation_dynamics_in_a_two-dimensional_magnetic_mixture/9387002 Based on classical density functional theory (DFT), we investigate the demixing phase transition of a two-dimensional, binary Heisenberg fluid mixture. The particles in the mixture are modeled as Gaussian soft spheres, where one component is characterized by an additional classical spin-spin interaction of Heisenberg type. Within the DFT we treat the particle interactions using a mean-field approximation. For certain magnetic coupling strengths, we calculate phase diagrams in the density-concentration plane. For sufficiently large coupling strengths and densities, we find a demixing phase transition driven by the ferromagnetic interactions of the magnetic species. We also provide a microscopic description (i.e., density profiles) of the resulting non-magnetic/magnetic fluid-fluid interface. Finally, we investigate the phase separation using dynamical density functional theory, considering both nucleation processes and spinodal demixing.