Magnetic decoupling in sputtered Fe/Si superlattices and multilayers

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

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Abstract

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.

Original languageEnglish
Pages (from-to)6335-6337
Number of pages3
JournalJournal of Applied Physics
Volume73
Issue number10
DOIs
Publication statusPublished - 1993 Dec 1
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Fullerton, E. E., Mattson, J. E., Lee, S. R., Sowers, C. H., Huang, Y. Y., Felcher, G., Bader, S. D., & Parker, F. T. (1993). Magnetic decoupling in sputtered Fe/Si superlattices and multilayers. Journal of Applied Physics, 73(10), 6335-6337. https://doi.org/10.1063/1.352640