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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.

SUBMITTER: Manzin A

PROVIDER: S-EPMC4766484 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature

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Influence of lattice defects on the ferromagnetic resonance behaviour of 2D magnonic crystals.

Manzin Alessandra A Barrera Gabriele G Celegato Federica F Coïsson Marco M Tiberto Paola P Tiberto Paola P

Scientific reports 20160225

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 nanosphe ...[more]

PMID: 26911336

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