Porta Tena, MarcelCastán i Vidal, Maria TeresaPlanes Vila, AntoniSaxena, A. (Avadh)2009-12-282009-12-2820050163-1829https://hdl.handle.net/2445/10550Using a Ginzburg-Landau model for the magnetic degrees of freedom with coupling to disorder, we demonstrate through simulations the existence of stripelike magnetic precursors recently observed in Co-Ni-Al alloys above the Curie temperature. We characterize these magnetic modulations by means of the temperature dependence of local magnetization distribution, magnetized volume fraction, and magnetic susceptibility. We also obtain a temperature-disorder strength phase diagram in which a magnetic tweed phase exists in a small region between the paramagnetic and dipolar phases.8 p.application/pdfeng(c) The American Physical Society, 2005Materials ferromagnèticsMètodes de simulacióTransformacions martensítiquesFerromagnetic materialsSimulation methodsMartensitic transformationsinfo:eu-repo/semantics/article527540info:eu-repo/semantics/openAccess