TY - JOUR
T1 - Thickness dependence of spin wave nonreciprocity in permalloy film
AU - Nakayama, Masaki
AU - Yamanoi, Kazuto
AU - Kasai, Shinya
AU - Mitani, Seiji
AU - Manago, Takashi
N1 - Publisher Copyright:
© 2015 The Japan Society of Applied Physics.
PY - 2015/8/1
Y1 - 2015/8/1
N2 - The amplitude of the spin wave (magnetostatic surface spin wave) depends on the propagation direction. Nonreciprocity hardly depends on the permalloy (Py) thickness between 100 and 300 nm, and it is determined by the spin wave resonant frequency. The nonreciprocal parameter decreases with increasing frequency, resulting in the large amplitude asymmetry at high frequencies, which is well supported by a result of theoretical analysis. The nonreciprocity of a 25-nm-thick-film, however, is lower than those of thicker films. This is qualitatively explained by a schematic model based on the origin of nonreciprocity.
AB - The amplitude of the spin wave (magnetostatic surface spin wave) depends on the propagation direction. Nonreciprocity hardly depends on the permalloy (Py) thickness between 100 and 300 nm, and it is determined by the spin wave resonant frequency. The nonreciprocal parameter decreases with increasing frequency, resulting in the large amplitude asymmetry at high frequencies, which is well supported by a result of theoretical analysis. The nonreciprocity of a 25-nm-thick-film, however, is lower than those of thicker films. This is qualitatively explained by a schematic model based on the origin of nonreciprocity.
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U2 - 10.7567/JJAP.54.083002
DO - 10.7567/JJAP.54.083002
M3 - Article
AN - SCOPUS:84938294884
SN - 0021-4922
VL - 54
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
IS - 8
M1 - 083002
ER -