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.