Magnetic decoupling in sputtered Fe/Si superlattices and multilayers

Eric E. Fullerton; J. E. Mattson; S. R. Lee; C. H. Sowers; Y. Y. Huang; G. Felcher; S. D. Bader; F. T. Parker

doi:10.1063/1.352640

Magnetic decoupling in sputtered Fe/Si superlattices and multilayers

Eric E. Fullerton, J. E. Mattson, S. R. Lee, C. H. Sowers, Y. Y. Huang, G. Felcher, S. D. Bader, F. T. Parker

Department of Materials Science and Engineering

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

56 Citations (Scopus)

Abstract

Sputtered Fe/Si superlattices were grown to study the magnetic coupling between ferromagnetic Fe layers (30 Å thick) for Si spacer-layer thicknesses (t_Si) between 10 and 40 Å. The material is ferromagnetical for t_Si≤13 Å and antiferromagnetically coupled for 13 Å≤t_Si≤17 Å. For t_Si≥17 Å the Fe layers are uncoupled. X-ray analysis indicates that the system is well layered, but that the crystal structure remains coherent only for t _Si≤17 Å. These results, along with our Mössbauer investigation, strongly suggest that the Si layer is crystalline for t _Si≤17 Å, and is silicide in nature. For thicker spacers, Si becomes amorphous. We propose a model of the layering that is consistent with the known properties of Fe silicide.

Original language	English
Pages (from-to)	6335-6337
Number of pages	3
Journal	Journal of Applied Physics
Volume	73
Issue number	10
DOIs	https://doi.org/10.1063/1.352640
Publication status	Published - 1993

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Physics and Astronomy(all)

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title = "Magnetic decoupling in sputtered Fe/Si superlattices and multilayers",

abstract = "Sputtered Fe/Si superlattices were grown to study the magnetic coupling between ferromagnetic Fe layers (30 {\AA} thick) for Si spacer-layer thicknesses (tSi) between 10 and 40 {\AA}. The material is ferromagnetical for tSi≤13 {\AA} and antiferromagnetically coupled for 13 {\AA}≤tSi≤17 {\AA}. For tSi≥17 {\AA} the Fe layers are uncoupled. X-ray analysis indicates that the system is well layered, but that the crystal structure remains coherent only for t Si≤17 {\AA}. These results, along with our M{\"o}ssbauer investigation, strongly suggest that the Si layer is crystalline for t Si≤17 {\AA}, and is silicide in nature. For thicker spacers, Si becomes amorphous. We propose a model of the layering that is consistent with the known properties of Fe silicide.",

author = "Fullerton, {Eric E.} and Mattson, {J. E.} and Lee, {S. R.} and Sowers, {C. H.} and Huang, {Y. Y.} and G. Felcher and Bader, {S. D.} and Parker, {F. T.}",

year = "1993",

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TY - JOUR

T1 - Magnetic decoupling in sputtered Fe/Si superlattices and multilayers

AU - Fullerton, Eric E.

AU - Mattson, J. E.

AU - Lee, S. R.

AU - Sowers, C. H.

AU - Huang, Y. Y.

AU - Felcher, G.

AU - Bader, S. D.

AU - Parker, F. T.

PY - 1993

Y1 - 1993

N2 - Sputtered Fe/Si superlattices were grown to study the magnetic coupling between ferromagnetic Fe layers (30 Å thick) for Si spacer-layer thicknesses (tSi) between 10 and 40 Å. The material is ferromagnetical for tSi≤13 Å and antiferromagnetically coupled for 13 Å≤tSi≤17 Å. For tSi≥17 Å the Fe layers are uncoupled. X-ray analysis indicates that the system is well layered, but that the crystal structure remains coherent only for t Si≤17 Å. These results, along with our Mössbauer investigation, strongly suggest that the Si layer is crystalline for t Si≤17 Å, and is silicide in nature. For thicker spacers, Si becomes amorphous. We propose a model of the layering that is consistent with the known properties of Fe silicide.

AB - Sputtered Fe/Si superlattices were grown to study the magnetic coupling between ferromagnetic Fe layers (30 Å thick) for Si spacer-layer thicknesses (tSi) between 10 and 40 Å. The material is ferromagnetical for tSi≤13 Å and antiferromagnetically coupled for 13 Å≤tSi≤17 Å. For tSi≥17 Å the Fe layers are uncoupled. X-ray analysis indicates that the system is well layered, but that the crystal structure remains coherent only for t Si≤17 Å. These results, along with our Mössbauer investigation, strongly suggest that the Si layer is crystalline for t Si≤17 Å, and is silicide in nature. For thicker spacers, Si becomes amorphous. We propose a model of the layering that is consistent with the known properties of Fe silicide.

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Magnetic decoupling in sputtered Fe/Si superlattices and multilayers

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