Saturation of attenuation length of spin waves in thick permalloy films
作者： Kazuto Yamanoi , Shinya Kasai , Seiji Mitani , Takashi Manago , Masaki Ota
关键词: Eddy current effect 、 Spin pumping 、 Materials science 、 Spin wave 、 Attenuation length 、 Permalloy 、 Saturation (magnetic) 、 Group velocity 、 Condensed matter physics
摘要: The permalloy (Py) thickness dependence of the magnetostatic spin wave (MSSW) propagation was investigated. Large-group velocity is realized for thick Py films and MSSW can propagate more than 150 µm. However, attenuation length hardly changes samples with a 100 nm, despite increasing group thickness. eddy current effect decreases channel it could cause damping enhancement due to intralayer pumping in films.
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