In this paper the metamaterial properties of a two-dimensional magnonic crystal are studied by doing micromagnetic and analytical calculations. The nanometric system is composed by holes embedded into a Permalloy ferromagnetic film. Since holes are much smaller than the characteristic mode wavelength commensurable with the periodicity, the dynamics is described in terms of effective quantities. Due to this condition also the characteristic wavelength is defined as an effective wavelength. It is shown that the effective wavelength and the corresponding effective wave vector are not necessarily equal to their corresponding Bloch quantities. - Presentazione orale by R. Zivieri - Conferenza internazionale
Effective Properties of a Two-Dimensional Magnonic Metamaterial -- Presentazione orale by R. Zivieri - Conferenza internazionale
ZIVIERI, Roberto;GIOVANNINI, Loris
2012
Abstract
In this paper the metamaterial properties of a two-dimensional magnonic crystal are studied by doing micromagnetic and analytical calculations. The nanometric system is composed by holes embedded into a Permalloy ferromagnetic film. Since holes are much smaller than the characteristic mode wavelength commensurable with the periodicity, the dynamics is described in terms of effective quantities. Due to this condition also the characteristic wavelength is defined as an effective wavelength. It is shown that the effective wavelength and the corresponding effective wave vector are not necessarily equal to their corresponding Bloch quantities. - Presentazione orale by R. Zivieri - Conferenza internazionaleI documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
