A magnetic patterned system constituted by antidots has been synthesized by electron beam lithography and its static and dynamical properties have been studied. Magnetic-domain patterns related to the static hysteresis loop have been acquired by means of magnetic force microscopy. The dynamical response to a magnetic field pulse has been studied by means of micromagnetic simulations. We found the magnetic response of a single antidot (excitation of a single mode) is qualitatively different from the one of coupled antidots (excitation of two modes). In the latter configuration, micromagnetic simulations show the low-frequency mode related to the in-phase oscillation of the magnetization and the high-frequency mode related to the out-of-phase oscillation of the magnetization.
Magnonics Crystal Composed by Magnetic Antivortices Confined in Antidots / Ragusa, C; Carpentieri, Mario; Celegato, F; Tiberto, P; Enrico, E; Boarino, L; Finocchio, G.. - In: IEEE TRANSACTIONS ON MAGNETICS. - ISSN 0018-9464. - 47:10(2011), pp. 2498-2501. [10.1109/TMAG.2011.2158578]
Magnonics Crystal Composed by Magnetic Antivortices Confined in Antidots
CARPENTIERI, Mario;
2011-01-01
Abstract
A magnetic patterned system constituted by antidots has been synthesized by electron beam lithography and its static and dynamical properties have been studied. Magnetic-domain patterns related to the static hysteresis loop have been acquired by means of magnetic force microscopy. The dynamical response to a magnetic field pulse has been studied by means of micromagnetic simulations. We found the magnetic response of a single antidot (excitation of a single mode) is qualitatively different from the one of coupled antidots (excitation of two modes). In the latter configuration, micromagnetic simulations show the low-frequency mode related to the in-phase oscillation of the magnetization and the high-frequency mode related to the out-of-phase oscillation of the magnetization.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
