Sequence, symmetry, and magnetic fluctuations of the magnetization reversal in exchange-biased multilayers

A. Paul; E. Kentzinger; U. Rücker; D. E. Bürgler; P. Grünberg

doi:10.1103/PhysRevB.70.224410

Sequence, symmetry, and magnetic fluctuations of the magnetization reversal in exchange-biased multilayers

A. Paul^*, E. Kentzinger, U. Rücker, D. E. Bürgler, P. Grünberg

^*Corresponding author for this work

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

28 Scopus citations

Abstract

The magnetization reversal in [Ir₂₀Mn₈₀/Co ₈₀Fe₂₀]₁₀ exchange-biased multilayers is studied by specular reflection and off-specular scattering of polarized neutrons. The reversal proceeds sequentially starting with the bottom (top) CoFe layer for decreasing (increasing) field due to the evolution of the grain size along the stack. Each CoFe layer remagnetizes symmetrically for both field branches in a nonuniform mode. Concomitant in-plane magnetization fluctuations revealed by off-specular spin-flip scattering indicate a more complex reversal mechanism than hitherto considered.

Original language	English
Article number	224410
Pages (from-to)	224410-1-224410-5
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	70
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.70.224410
State	Published - Dec 2004
Externally published	Yes

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title = "Sequence, symmetry, and magnetic fluctuations of the magnetization reversal in exchange-biased multilayers",

abstract = "The magnetization reversal in [Ir20Mn80/Co 80Fe20]10 exchange-biased multilayers is studied by specular reflection and off-specular scattering of polarized neutrons. The reversal proceeds sequentially starting with the bottom (top) CoFe layer for decreasing (increasing) field due to the evolution of the grain size along the stack. Each CoFe layer remagnetizes symmetrically for both field branches in a nonuniform mode. Concomitant in-plane magnetization fluctuations revealed by off-specular spin-flip scattering indicate a more complex reversal mechanism than hitherto considered.",

author = "A. Paul and E. Kentzinger and U. R{\"u}cker and B{\"u}rgler, {D. E.} and P. Gr{\"u}nberg",

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doi = "10.1103/PhysRevB.70.224410",

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AU - Rücker, U.

AU - Bürgler, D. E.

AU - Grünberg, P.

PY - 2004/12

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N2 - The magnetization reversal in [Ir20Mn80/Co 80Fe20]10 exchange-biased multilayers is studied by specular reflection and off-specular scattering of polarized neutrons. The reversal proceeds sequentially starting with the bottom (top) CoFe layer for decreasing (increasing) field due to the evolution of the grain size along the stack. Each CoFe layer remagnetizes symmetrically for both field branches in a nonuniform mode. Concomitant in-plane magnetization fluctuations revealed by off-specular spin-flip scattering indicate a more complex reversal mechanism than hitherto considered.

AB - The magnetization reversal in [Ir20Mn80/Co 80Fe20]10 exchange-biased multilayers is studied by specular reflection and off-specular scattering of polarized neutrons. The reversal proceeds sequentially starting with the bottom (top) CoFe layer for decreasing (increasing) field due to the evolution of the grain size along the stack. Each CoFe layer remagnetizes symmetrically for both field branches in a nonuniform mode. Concomitant in-plane magnetization fluctuations revealed by off-specular spin-flip scattering indicate a more complex reversal mechanism than hitherto considered.

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Sequence, symmetry, and magnetic fluctuations of the magnetization reversal in exchange-biased multilayers

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