In this paper we investigate both theoretically and from an experimental point of view the magnonic band structure of chains of Permalloy rectangular nanodots. Micromagnetic calculations and Brillouin light scattering measurements were performed for Bloch wave vector q perpendicular to the applied field H. By means of micromagnetic calculations we are able to estimate the amplitude of modes frequency oscillation (magnonic band) and the group velocity in the long wavelength limit for a vanishing separation which is an important property to identify the behavior of a one-dimensional quasi-continuous magnonic metamaterial.
Metamaterial properties of arrays of rectangular magnetic dots -- Conferenza internazionale
ZIVIERI, Roberto;MONTONCELLO, Federico;GIOVANNINI, Loris;NIZZOLI, Fabrizio;
2011
Abstract
In this paper we investigate both theoretically and from an experimental point of view the magnonic band structure of chains of Permalloy rectangular nanodots. Micromagnetic calculations and Brillouin light scattering measurements were performed for Bloch wave vector q perpendicular to the applied field H. By means of micromagnetic calculations we are able to estimate the amplitude of modes frequency oscillation (magnonic band) and the group velocity in the long wavelength limit for a vanishing separation which is an important property to identify the behavior of a one-dimensional quasi-continuous magnonic metamaterial.File in questo prodotto:
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