Micromagnetic Modeling of Released/Non-released Magnetostrictive Films

Abstract

ABSTRACTWe study the magnetostrictive behavior of two types of films: one is released from the substrate but constrained from its lateral boundary and the other is attached to the substrate. The former is investigated using the recently developed micromagnetic model which is suitable for films subjected to realistic magneto-mechanical boundary conditions. The latter is modeled within a framework extended from our recent theoretical paper studying rough alloy films with composition modulation. We give an explicit form of the stress-induced magnetic field taking into account the elastic interaction of the film with the substrate. Such results are very different from those considered for attached thick films in literature.