Vives i Santa-Eulàlia, EduardNavas Portella, Víctor2014-11-212014-11-212014-06https://hdl.handle.net/2445/59902Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Any: 2014, Tutor: Eduard Vives i Santa-EulàliaThis work presents an introduction to the Barkhausen e ect. First, experimental measurements of Barkhausen noise detected in a soft iron sample will be exposed and analysed. Two di erent kinds of simulations of the 2-d Out of Equilibrium Random Field Ising Model (RFIM) at T=0 will be performed in order to explain this e ect: one with periodic boundary conditions (PBC) and the other with xed boundary conditions (FBC). The rst model represents a spin nucleation dynamics whereas the second one represents the dynamics of a single domain wall. Results from these two di erent models will be contrasted and discussed in order to understand the nature of this e ect.5 p.application/pdfengcc-by-nc-nd (c) Navas Portella, 2014http://creativecommons.org/licenses/by-nc-nd/3.0/es/Inducció magnèticaMaterials ferromagnèticsTreballs de fi de grauMagnetic inductionFerromagnetic materialsBachelor's thesesinfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/openAccess