Brillouin light scattering study of magnetic coupling in CoFe/Mn/CoFe

M. Chirita; G. Robins; Robert Stamps; R. Sooryakumar; M.E. Filipkowski; C.J. Gutierrez; G.A. Prinz

doi:10.1103/PhysRevB.58.869

Brillouin light scattering study of magnetic coupling in CoFe/Mn/CoFe

M. Chirita, G. Robins, Robert Stamps, R. Sooryakumar, M.E. Filipkowski, C.J. Gutierrez, G.A. Prinz

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

15 Citations (Scopus)

Abstract

Coupling mechanisms between Co0.75Fe0.25 films separated by Mn layers are investigated using Brillouin light scattering from thermal spin waves. Trilayers of CoFe/Mn/CoFe, grown by molecular-beam epitaxy, were studied with Mn thicknesses between 6 and 30 Angstrom. Spin-wave excitations corresponding to acoustic and optic modes in double layer magnetic structures were observed, and allowed a determination of a strong magnetic coupling between the CoFe films. Spin-wave frequencies were examined as functions of applied field, Mn film thickness, and temperature. A microscopic model is used to examine magnetic order in a ferromagnet/antiferromagnet/ferromagnet structure. Discrepancies between the data and predictions of the microscopic model provide evidence for a twist in the FeCo spins that extends into the ferromagnet layer. [S0163-1829(98)10117-0].

Original language	English
Pages (from-to)	869-876
Journal	Physical Review B
Volume	58
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevB.58.869
Publication status	Published - 1998

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10.1103/PhysRevB.58.869

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@article{4575af0f8033442ab2811664f5b0f9bd,

title = "Brillouin light scattering study of magnetic coupling in CoFe/Mn/CoFe",

abstract = "Coupling mechanisms between Co0.75Fe0.25 films separated by Mn layers are investigated using Brillouin light scattering from thermal spin waves. Trilayers of CoFe/Mn/CoFe, grown by molecular-beam epitaxy, were studied with Mn thicknesses between 6 and 30 Angstrom. Spin-wave excitations corresponding to acoustic and optic modes in double layer magnetic structures were observed, and allowed a determination of a strong magnetic coupling between the CoFe films. Spin-wave frequencies were examined as functions of applied field, Mn film thickness, and temperature. A microscopic model is used to examine magnetic order in a ferromagnet/antiferromagnet/ferromagnet structure. Discrepancies between the data and predictions of the microscopic model provide evidence for a twist in the FeCo spins that extends into the ferromagnet layer. [S0163-1829(98)10117-0].",

author = "M. Chirita and G. Robins and Robert Stamps and R. Sooryakumar and M.E. Filipkowski and C.J. Gutierrez and G.A. Prinz",

year = "1998",

doi = "10.1103/PhysRevB.58.869",

language = "English",

volume = "58",

pages = "869--876",

journal = "Physical Review B",

publisher = "American Physical Society",

number = "2",

}

TY - JOUR

T1 - Brillouin light scattering study of magnetic coupling in CoFe/Mn/CoFe

AU - Chirita, M.

AU - Robins, G.

AU - Stamps, Robert

AU - Sooryakumar, R.

AU - Filipkowski, M.E.

AU - Gutierrez, C.J.

AU - Prinz, G.A.

PY - 1998

Y1 - 1998

N2 - Coupling mechanisms between Co0.75Fe0.25 films separated by Mn layers are investigated using Brillouin light scattering from thermal spin waves. Trilayers of CoFe/Mn/CoFe, grown by molecular-beam epitaxy, were studied with Mn thicknesses between 6 and 30 Angstrom. Spin-wave excitations corresponding to acoustic and optic modes in double layer magnetic structures were observed, and allowed a determination of a strong magnetic coupling between the CoFe films. Spin-wave frequencies were examined as functions of applied field, Mn film thickness, and temperature. A microscopic model is used to examine magnetic order in a ferromagnet/antiferromagnet/ferromagnet structure. Discrepancies between the data and predictions of the microscopic model provide evidence for a twist in the FeCo spins that extends into the ferromagnet layer. [S0163-1829(98)10117-0].

AB - Coupling mechanisms between Co0.75Fe0.25 films separated by Mn layers are investigated using Brillouin light scattering from thermal spin waves. Trilayers of CoFe/Mn/CoFe, grown by molecular-beam epitaxy, were studied with Mn thicknesses between 6 and 30 Angstrom. Spin-wave excitations corresponding to acoustic and optic modes in double layer magnetic structures were observed, and allowed a determination of a strong magnetic coupling between the CoFe films. Spin-wave frequencies were examined as functions of applied field, Mn film thickness, and temperature. A microscopic model is used to examine magnetic order in a ferromagnet/antiferromagnet/ferromagnet structure. Discrepancies between the data and predictions of the microscopic model provide evidence for a twist in the FeCo spins that extends into the ferromagnet layer. [S0163-1829(98)10117-0].

U2 - 10.1103/PhysRevB.58.869

DO - 10.1103/PhysRevB.58.869

M3 - Article

VL - 58

SP - 869

EP - 876

JO - Physical Review B

JF - Physical Review B

IS - 2

ER -

Brillouin light scattering study of magnetic coupling in CoFe/Mn/CoFe

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