Enhanced exchange bias due to an ultra-thin, non-magnetic insulator spacer layer

A. Paul; D. E. Bürgler; M. Luysberg; P. Grünberg

doi:10.1209/epl/i2003-10312-y

Enhanced exchange bias due to an ultra-thin, non-magnetic insulator spacer layer

A. Paul^*, D. E. Bürgler, M. Luysberg, P. Grünberg

^*Corresponding author for this work

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

16 Scopus citations

Abstract

The exchange bias effect of Co/CoO bilayers is found to significantly increase when an ultra-thin, non-magnetic insulating AlO_x spacer is added at the ferromagnet/antiferromagnet interface. The dependence on the spacer thickness is non-monotonic with a maximum two-fold enhancement of the exchange bias field H_EB at a spacer thickness of 1.0 nm. These observations are explained in terms of a discontinuous layer structure of the spacer and its thickness evolution. There is no indication of a magnetic interaction across the AlO_x spacer layer.

Original language	English
Pages (from-to)	233-239
Number of pages	7
Journal	Europhysics Letters
Volume	68
Issue number	2
DOIs	https://doi.org/10.1209/epl/i2003-10312-y
State	Published - Oct 2004
Externally published	Yes

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title = "Enhanced exchange bias due to an ultra-thin, non-magnetic insulator spacer layer",

abstract = "The exchange bias effect of Co/CoO bilayers is found to significantly increase when an ultra-thin, non-magnetic insulating AlOx spacer is added at the ferromagnet/antiferromagnet interface. The dependence on the spacer thickness is non-monotonic with a maximum two-fold enhancement of the exchange bias field HEB at a spacer thickness of 1.0 nm. These observations are explained in terms of a discontinuous layer structure of the spacer and its thickness evolution. There is no indication of a magnetic interaction across the AlOx spacer layer.",

author = "A. Paul and B{\"u}rgler, {D. E.} and M. Luysberg and P. Gr{\"u}nberg",

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AU - Paul, A.

AU - Bürgler, D. E.

AU - Luysberg, M.

AU - Grünberg, P.

PY - 2004/10

Y1 - 2004/10

N2 - The exchange bias effect of Co/CoO bilayers is found to significantly increase when an ultra-thin, non-magnetic insulating AlOx spacer is added at the ferromagnet/antiferromagnet interface. The dependence on the spacer thickness is non-monotonic with a maximum two-fold enhancement of the exchange bias field HEB at a spacer thickness of 1.0 nm. These observations are explained in terms of a discontinuous layer structure of the spacer and its thickness evolution. There is no indication of a magnetic interaction across the AlOx spacer layer.

AB - The exchange bias effect of Co/CoO bilayers is found to significantly increase when an ultra-thin, non-magnetic insulating AlOx spacer is added at the ferromagnet/antiferromagnet interface. The dependence on the spacer thickness is non-monotonic with a maximum two-fold enhancement of the exchange bias field HEB at a spacer thickness of 1.0 nm. These observations are explained in terms of a discontinuous layer structure of the spacer and its thickness evolution. There is no indication of a magnetic interaction across the AlOx spacer layer.

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U2 - 10.1209/epl/i2003-10312-y

DO - 10.1209/epl/i2003-10312-y

M3 - 文章

AN - SCOPUS:7444239189

VL - 68

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EP - 239

JO - Europhysics Letters

JF - Europhysics Letters

SN - 0295-5075

IS - 2

ER -

Enhanced exchange bias due to an ultra-thin, non-magnetic insulator spacer layer

Abstract

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