Determination of exchange constants of Heusler compounds by Brillouin light scattering spectroscopy: Application to Co2MnSi

J. Hamrle, O. Gaier, Seong Gi Min, B. Hillebrands, Y. Sakuraba, Y. Ando

研究成果: Article査読

45 被引用数 (Scopus)

抄録

Brillouin light scattering spectroscopy from so-called standing spin waves in thin magnetic films is often used to determine the magnetic exchange constant. The data analysis of the experimentally determined spin-wave modes requires an unambiguous assignment to the correct spin-wave mode orders. Often additional investigations are needed to guarantee correct assignment. This is particularly important in the case of Heusler compounds where values of the exchange constant vary substantially between different compounds. As a showcase, we report on the determination of the exchange constant (exchange stiffness constant) in Co2MnSi, which is found to be A = 2.35 0.1 νerg cm-1 (D = 575 20 meV2), a value comparable to the value of the exchange constant of Co.

本文言語English
論文番号084005
ジャーナルJournal of Physics D: Applied Physics
42
8
DOI
出版ステータスPublished - 2009

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 音響学および超音波学
  • 表面、皮膜および薄膜

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