Thickness dependence of spin wave nonreciprocity in permalloy film

Masaki Nakayama, Kazuto Yamanoi, Shinya Kasai, Seiji Mitani, Takashi Manago

研究成果: Article査読

17 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号083002
ジャーナルJapanese journal of applied physics
54
8
DOI
出版ステータスPublished - 2015 8月 1
外部発表はい

ASJC Scopus subject areas

  • 工学一般
  • 物理学および天文学一般

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