Light scattering from spin wave excitations in a Co/CoPt exchange spring

David Crew; Robert Stamps; H.Y. Liu; Z.K. Wang; M.H. Kuok; S.C. Ng; K. Barmak; J. Kim; L.H. Lewis

doi:10.1016/j.jmmm.2004.11.519

Light scattering from spin wave excitations in a Co/CoPt exchange spring

David Crew, Robert Stamps, H.Y. Liu, Z.K. Wang, M.H. Kuok, S.C. Ng, K. Barmak, J. Kim, L.H. Lewis

Graduate Research School

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

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. (c) 2004 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	530-532
Journal	Journal of Magnetism and Magnetic Materials
Volume	290-291
Issue number	1
DOIs	https://doi.org/10.1016/j.jmmm.2004.11.519
Publication status	Published - 2005

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10.1016/j.jmmm.2004.11.519

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title = "Light scattering from spin wave excitations in a Co/CoPt exchange spring",

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. (c) 2004 Elsevier B.V. All rights reserved.",

author = "David Crew and Robert Stamps and H.Y. Liu and Z.K. Wang and M.H. Kuok and S.C. Ng and K. Barmak and J. Kim and L.H. Lewis",

year = "2005",

doi = "10.1016/j.jmmm.2004.11.519",

language = "English",

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TY - JOUR

T1 - Light scattering from spin wave excitations in a Co/CoPt exchange spring

AU - Crew, David

AU - Stamps, Robert

AU - Liu, H.Y.

AU - Wang, Z.K.

AU - Kuok, M.H.

AU - Ng, S.C.

AU - Barmak, K.

AU - Kim, J.

AU - Lewis, L.H.

PY - 2005

Y1 - 2005

N2 - 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. (c) 2004 Elsevier B.V. All rights reserved.

AB - 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. (c) 2004 Elsevier B.V. All rights reserved.

U2 - 10.1016/j.jmmm.2004.11.519

DO - 10.1016/j.jmmm.2004.11.519

M3 - Article

SN - 0304-8853

VL - 290-291

SP - 530

EP - 532

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 1

ER -

Light scattering from spin wave excitations in a Co/CoPt exchange spring

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