Brillouin light scattering investigations of exchange biased (110)-oriented NiFe/FeMn bilayers

C. Mathieu; M. Bauer; B. Hillebrands; J. Fassbender; G. Guntherodt; R. Jungblut; J.T. Kohlhepp; A. Reinders

doi:10.1063/1.367049

Brillouin light scattering investigations of exchange biased (110)-oriented NiFe/FeMn bilayers

C. Mathieu, M. Bauer, B. Hillebrands, J. Fassbender, G. Guntherodt, R. Jungblut, J.T. Kohlhepp, A. Reinders

Physics of Nanostructures

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Abstract

All contributing magnetic anisotropies in (110)-oriented exchange biased Ni80Fe20/Fe50Mn50 double layers prepared by molecular beam epitaxy on Cu(110) single crystals have been determined by means of Brillouin light scattering. Upon covering the Ni80Fe20 films by Fe50Mn50, a unidirectional anisotropy contribution appears, which is consistent with the measured exchange bias field. The uniaxial and fourfold in-plane anisotropy contributions are largely modified by an amount, which scales with the Ni80Fe20 thickness, indicating an interface effect. The strong uniaxial anisotropy contribution shows an in-plane switching of the easy axis from [110] to [001] with increasing Ni80Fe20-layer thickness. The large mode width of the spin wave excitations, which exceeds the linewidth of uncovered Ni80Fe20 films by a factor of more than six, indicates large spatial variations of the exchange coupling constant.

Original language	English
Pages (from-to)	2863-2865
Number of pages	3
Journal	Journal of Applied Physics
Volume	83
Issue number	5
DOIs	https://doi.org/10.1063/1.367049
Publication status	Published - 1998

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title = "Brillouin light scattering investigations of exchange biased (110)-oriented NiFe/FeMn bilayers",

abstract = "All contributing magnetic anisotropies in (110)-oriented exchange biased Ni80Fe20/Fe50Mn50 double layers prepared by molecular beam epitaxy on Cu(110) single crystals have been determined by means of Brillouin light scattering. Upon covering the Ni80Fe20 films by Fe50Mn50, a unidirectional anisotropy contribution appears, which is consistent with the measured exchange bias field. The uniaxial and fourfold in-plane anisotropy contributions are largely modified by an amount, which scales with the Ni80Fe20 thickness, indicating an interface effect. The strong uniaxial anisotropy contribution shows an in-plane switching of the easy axis from [110] to [001] with increasing Ni80Fe20-layer thickness. The large mode width of the spin wave excitations, which exceeds the linewidth of uncovered Ni80Fe20 films by a factor of more than six, indicates large spatial variations of the exchange coupling constant.",

author = "C. Mathieu and M. Bauer and B. Hillebrands and J. Fassbender and G. Guntherodt and R. Jungblut and J.T. Kohlhepp and A. Reinders",

year = "1998",

doi = "10.1063/1.367049",

language = "English",

volume = "83",

pages = "2863--2865",

journal = "Journal of Applied Physics",

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publisher = "American Institute of Physics",

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TY - JOUR

T1 - Brillouin light scattering investigations of exchange biased (110)-oriented NiFe/FeMn bilayers

AU - Mathieu, C.

AU - Bauer, M.

AU - Hillebrands, B.

AU - Fassbender, J.

AU - Guntherodt, G.

AU - Jungblut, R.

AU - Kohlhepp, J.T.

AU - Reinders, A.

PY - 1998

Y1 - 1998

N2 - All contributing magnetic anisotropies in (110)-oriented exchange biased Ni80Fe20/Fe50Mn50 double layers prepared by molecular beam epitaxy on Cu(110) single crystals have been determined by means of Brillouin light scattering. Upon covering the Ni80Fe20 films by Fe50Mn50, a unidirectional anisotropy contribution appears, which is consistent with the measured exchange bias field. The uniaxial and fourfold in-plane anisotropy contributions are largely modified by an amount, which scales with the Ni80Fe20 thickness, indicating an interface effect. The strong uniaxial anisotropy contribution shows an in-plane switching of the easy axis from [110] to [001] with increasing Ni80Fe20-layer thickness. The large mode width of the spin wave excitations, which exceeds the linewidth of uncovered Ni80Fe20 films by a factor of more than six, indicates large spatial variations of the exchange coupling constant.

AB - All contributing magnetic anisotropies in (110)-oriented exchange biased Ni80Fe20/Fe50Mn50 double layers prepared by molecular beam epitaxy on Cu(110) single crystals have been determined by means of Brillouin light scattering. Upon covering the Ni80Fe20 films by Fe50Mn50, a unidirectional anisotropy contribution appears, which is consistent with the measured exchange bias field. The uniaxial and fourfold in-plane anisotropy contributions are largely modified by an amount, which scales with the Ni80Fe20 thickness, indicating an interface effect. The strong uniaxial anisotropy contribution shows an in-plane switching of the easy axis from [110] to [001] with increasing Ni80Fe20-layer thickness. The large mode width of the spin wave excitations, which exceeds the linewidth of uncovered Ni80Fe20 films by a factor of more than six, indicates large spatial variations of the exchange coupling constant.

U2 - 10.1063/1.367049

DO - 10.1063/1.367049

M3 - Article

SN - 0021-8979

VL - 83

SP - 2863

EP - 2865

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 5

ER -

Brillouin light scattering investigations of exchange biased (110)-oriented NiFe/FeMn bilayers

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