Magneto-optical investigation of epitaxial nonstoichiometric Co2MnGe thin films

Trudel, Simon; Hamrle, Jaroslav; Hillebrands, Burkard et al.

Journal of Applied Physics, 2010, 107(4), 043912

Permalink : https://hdl.handle.net/2115/42761

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アクセス権
open access
URI
https://hdl.handle.net/2115/42761
タイトル
Magneto-optical investigation of epitaxial nonstoichiometric Co2MnGe thin films
著者
Trudel, Simon ; Hamrle, Jaroslav ; Hillebrands, Burkard ; Taira, Tomoyuki ; Yamamoto, Masafumi
著者名
Trudel, Simon
著者名
Hamrle, Jaroslav
著者名
Hillebrands, Burkard
著者名
Taira, Tomoyuki
e-Rad_Researcher
10322835
著者名
Yamamoto, Masafumi
言語
英語
キーワード
Brillouin spectra
cobalt compounds
Kerr magneto-optical effect
magnetic epitaxial layers
magnetisation
manganese compounds
spin waves
発行日
2010-02-15
出版者
American Institute of Physics
収録物名
Journal of Applied Physics
巻(号)
107(4)
ページ
043912
抄録
We investigate the magneto-optical properties of a nonstoichiometric, epitaxial Co2Mn0.77Ge0.42(001) film grown on a MgO-buffered MgO(001) single-crystal substrate. Magneto-optical Kerr effect magnetometry indicates that the sample has strong uniaxial anisotropy, whereas the easy and hard axes of magnetization are tilted by ∼10° with respect to the [110] and [110] directions, respectively. A modest quadratic Kerr effect with an amplitude of 0.4 mdeg was observed. Brillouin light scattering spectroscopy was used to find that the exchange constant A, spin-wave stiffness D, and saturation magnetization Ms are 22.5 pJ/m, 413 meV Å2, and 6.43 μB/f.u., respectively. The saturation magnetization value suggests that the Slater-Pauling rule might apply to such nonstoichiometric compositions.
資源タイプ
学術雑誌論文
出版タイプ
Version of Record
権利情報
Copyright 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. Appl. Phys. 107, 043912 (2010) and may be found at https://dx.doi.org/10.1063/1.3296350
PISSN
0021-8979
関連情報 (isIdenticalTo)
出版社版DOI
https://doi.org/10.1063/1.3296350