Interlayer coupling in ferromagnetic epitaxial Fe 3 Si ∕ Fe Si 2 superlattices

Ferromagnetic epitaxial B 2 -type Fe 3 Si ∕ Fe Si 2 superlattices were prepared on Si(111) at room temperature by facing target direct-current sputtering. The bilinear and biquadratic coupling constants J 1 and J 2 of the antiferromagnetically coupled superlattice were comparable to those of the sim...

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Bibliographic Details
Published in:Applied physics letters 2006-12, Vol.89 (25), p.253110-253110-3
Main Authors: Yoshitake, T., Ogawa, T., Nakagauchi, D., Hara, D., Itakura, M., Kuwano, N., Tomokiyo, Y., Takeda, K., Kajiwara, T., Ohashi, M., Oomi, G., Nagayama, K.
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Summary:Ferromagnetic epitaxial B 2 -type Fe 3 Si ∕ Fe Si 2 superlattices were prepared on Si(111) at room temperature by facing target direct-current sputtering. The bilinear and biquadratic coupling constants J 1 and J 2 of the antiferromagnetically coupled superlattice were comparable to those of the similar superlattices using Fe layers although the saturation magnetization of Fe 3 Si is approximately half as large as that of Fe. The authors believe that this is due to the formation of a well-ordered quantum well in the spacers, which is mainly caused by the regular accumulation of highly oriented Fe 3 Si layers.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2410222