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.

Influence of lattice defects on the ferromagnetic resonance behaviour of 2D magnonic crystals / Manzin, Alessandra; Barrera, Gabriele; Celegato, Federica; Coisson, Marco; Tiberto, PAOLA MARIA. - In: SCIENTIFIC REPORTS. - ISSN 2045-2322. - 6:(2016), p. 22004. [10.1038/srep22004]

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

MANZIN, ALESSANDRA
;
Barrera, Gabriele;CELEGATO, FEDERICA;COISSON, MARCO;TIBERTO, PAOLA MARIA
2016

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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11696/54654
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