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Title: Light scattering from spin wave excitations in a Co/CoPt exchange spring
Authors: Crew, D.C.
Stamps, R.L.
Liu, H.Y.
Wang, Z.K. 
Kuok, M.H. 
Ng, S.C. 
Barmak, K.
Kim, J.
Lewis, L.H.
Keywords: Exchange coupling-thin films
Light scattering-Brillouin
Spin waves
Thin films-bilayer
Issue Date: Apr-2005
Citation: Crew, D.C., Stamps, R.L., Liu, H.Y., Wang, Z.K., Kuok, M.H., Ng, S.C., Barmak, K., Kim, J., Lewis, L.H. (2005-04). Light scattering from spin wave excitations in a Co/CoPt exchange spring. Journal of Magnetism and Magnetic Materials 290-291 PART 1 : 530-532. ScholarBank@NUS Repository.
Abstract: We have developed a theory of Brillouin light scattering (BLS) from spin wave excitations in non-collinear magnetisation structures. We compare the results of calculated spectra for scattering from the spiral state found in exchange-coupled hard/soft CoPt/Co bilayers during reversal with experimental data. Both the Stokes/anti-Stokes peak intensity ratio is described, as well as the asymmetry in peak frequency between the Stokes and anti-Stokes spectra. It is shown that the frequency asymmetry arises naturally in the presence of a spin spiral structure. © 2004 Elsevier B.V. All rights reserved.
Source Title: Journal of Magnetism and Magnetic Materials
ISSN: 03048853
DOI: 10.1016/j.jmmm.2004.11.519
Appears in Collections:Staff Publications

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