Influence of interface roughness, film texture, and magnetic anisotropy on exchange bias in [Pt/Co]3/IrMn and IrMn/[Co/Pt]3 multilayers

Jaroslaw Kanak, Tomasz Stobiecki, Sebastiaan van Dijken

Research output: Contribution to journalArticleScientificpeer-review

18 Citations (Scopus)

Abstract

Co/Pt multilayers can exhibit considerable exchange bias along the film normal when grown onto or covered by an antiferromagnetic IrMn layer. The magnitude of the bias effect depends strongly on the selection of the buffer layers and is largest for Co/Pt multilayers with small perpendicular anisotropy. This counterintuitive result is explained by opposite dependencies of exchange bias and magnetic anisotropy on the degree of film texture and grain size. Interface roughness also influences the perpendicular exchange bias field. The largest biases are measured on smooth films. Interlayer mixing during post-deposition annealing procedures decreases the exchange bias field of IrMn-capped Co/Pt multilayers.
Original languageEnglish
Pages (from-to)238 - 245
Number of pages8
JournalIEEE Transactions on Magnetics
Volume44
Issue number2
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed

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Magnetic anisotropy
Multilayers
Textures
Surface roughness
Buffer layers
Anisotropy
Annealing

Cite this

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title = "Influence of interface roughness, film texture, and magnetic anisotropy on exchange bias in [Pt/Co]3/IrMn and IrMn/[Co/Pt]3 multilayers",
abstract = "Co/Pt multilayers can exhibit considerable exchange bias along the film normal when grown onto or covered by an antiferromagnetic IrMn layer. The magnitude of the bias effect depends strongly on the selection of the buffer layers and is largest for Co/Pt multilayers with small perpendicular anisotropy. This counterintuitive result is explained by opposite dependencies of exchange bias and magnetic anisotropy on the degree of film texture and grain size. Interface roughness also influences the perpendicular exchange bias field. The largest biases are measured on smooth films. Interlayer mixing during post-deposition annealing procedures decreases the exchange bias field of IrMn-capped Co/Pt multilayers.",
author = "Jaroslaw Kanak and Tomasz Stobiecki and {van Dijken}, Sebastiaan",
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Influence of interface roughness, film texture, and magnetic anisotropy on exchange bias in [Pt/Co]3/IrMn and IrMn/[Co/Pt]3 multilayers. / Kanak, Jaroslaw; Stobiecki, Tomasz; van Dijken, Sebastiaan.

In: IEEE Transactions on Magnetics, Vol. 44, No. 2, 2008, p. 238 - 245.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Influence of interface roughness, film texture, and magnetic anisotropy on exchange bias in [Pt/Co]3/IrMn and IrMn/[Co/Pt]3 multilayers

AU - Kanak, Jaroslaw

AU - Stobiecki, Tomasz

AU - van Dijken, Sebastiaan

PY - 2008

Y1 - 2008

N2 - Co/Pt multilayers can exhibit considerable exchange bias along the film normal when grown onto or covered by an antiferromagnetic IrMn layer. The magnitude of the bias effect depends strongly on the selection of the buffer layers and is largest for Co/Pt multilayers with small perpendicular anisotropy. This counterintuitive result is explained by opposite dependencies of exchange bias and magnetic anisotropy on the degree of film texture and grain size. Interface roughness also influences the perpendicular exchange bias field. The largest biases are measured on smooth films. Interlayer mixing during post-deposition annealing procedures decreases the exchange bias field of IrMn-capped Co/Pt multilayers.

AB - Co/Pt multilayers can exhibit considerable exchange bias along the film normal when grown onto or covered by an antiferromagnetic IrMn layer. The magnitude of the bias effect depends strongly on the selection of the buffer layers and is largest for Co/Pt multilayers with small perpendicular anisotropy. This counterintuitive result is explained by opposite dependencies of exchange bias and magnetic anisotropy on the degree of film texture and grain size. Interface roughness also influences the perpendicular exchange bias field. The largest biases are measured on smooth films. Interlayer mixing during post-deposition annealing procedures decreases the exchange bias field of IrMn-capped Co/Pt multilayers.

U2 - 10.1109/TMAG.2007.909438

DO - 10.1109/TMAG.2007.909438

M3 - Article

VL - 44

SP - 238

EP - 245

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

SN - 0018-9464

IS - 2

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