Morphology of the glassy phase of a disordered ferromagnet

Previous work established the existence of a novel ferromagnetic disordering mechanism in ferromagnetic disordered systems with random fields [Phys. Rev. Lett. 111, 177202 (2013)]. This mechanism lies in between the standard random field ferromagnetic disordering mechanism and the Imry-Ma disordering mechanism. The interplay of the quenched disorder and the small but finite random fields favors domains with a spin-glass like spin alignment destroying the ferromagnetic phase. Making use of large-scale Monte Carlo simulations of disordered spin models in a random field at different dimensionalities we study the morphology of the spin-glass like domains at different points of the phase diagram and unveil the microscopic structure of the quasi-spin glass phase.