title: Influence of lattice defects on the ferromagnetic resonance behaviour of 2D magnonic crystals.
abstract: This paper studies, from a modelling point of view, the influence of randomly distributed lattice defects (non-patterned areas and variable hole size) on the ferromagnetic resonance behaviour and spin wave mode profiles of 2D magnonic crystals based on Ni80Fe20 antidot arrays with hexagonal lattice. A reference sample is first defined via the comparison of experimental and simulated hysteresis loops and magnetoresistive curves of patterned films, prepared by self-assembly of polystyrene nanospheres. Second, a parametric analysis of the dynamic response is performed, investigating how edge, quasi-uniform and localized modes are affected by alterations of the lattice geometry and bias field amplitude. Finally, some results about the possible use of magnetic antidot arrays in frequency-based sensors for magnetic bead detection are presented, highlighting the need for an accurate control of microstructural features.
authors.affiliation: Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, Italy.
authors.forename: Alessandra
authors.initials: A
authors.lastname: Manzin
authors.affiliation: Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, Italy.|Università degli Studi di Torino, Dipartimento di Chimica, Torino, Italy.
authors.forename: Gabriele
authors.initials: G
authors.lastname: Barrera
authors.affiliation: Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, Italy.
authors.forename: Federica
authors.initials: F
authors.lastname: Celegato
authors.affiliation: Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Coïsson
authors.affiliation: Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, Italy.
authors.forename: Paola
authors.initials: P
authors.lastname: Tiberto