TY - JOUR
T1 - Saturation of attenuation length of spin waves in thick permalloy films
AU - Ota, Masaki
AU - Yamanoi, Kazuto
AU - Kasai, Shinya
AU - Mitani, Seiji
AU - Manago, Takashi
N1 - Publisher Copyright:
© 2015 The Japan Society of Applied Physics.
PY - 2015/11
Y1 - 2015/11
N2 - The permalloy (Py) thickness dependence of the magnetostatic spin wave (MSSW) propagation was investigated. Large-group velocity is realized for thick Py films and the MSSW can propagate more than 150 μm. However, attenuation length hardly changes for samples with a Py thickness of more than 100 nm, despite the increasing group velocity with increasing thickness. The eddy current effect decreases the wave channel thickness and it could cause the damping enhancement due to intralayer spin pumping in thick Py films.
AB - The permalloy (Py) thickness dependence of the magnetostatic spin wave (MSSW) propagation was investigated. Large-group velocity is realized for thick Py films and the MSSW can propagate more than 150 μm. However, attenuation length hardly changes for samples with a Py thickness of more than 100 nm, despite the increasing group velocity with increasing thickness. The eddy current effect decreases the wave channel thickness and it could cause the damping enhancement due to intralayer spin pumping in thick Py films.
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U2 - 10.7567/JJAP.54.113001
DO - 10.7567/JJAP.54.113001
M3 - Article
AN - SCOPUS:84946019758
SN - 0021-4922
VL - 54
JO - Japanese journal of applied physics
JF - Japanese journal of applied physics
IS - 11
M1 - 113001
ER -