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Magnetic Properties of Rare-Earth/Fe Multilayered Films with Artificial Superstructures

Published online by Cambridge University Press:  03 September 2012

Teruya Shinjo ,
Ko Mibu ,
Shinichi Ogawa  and
Nobuyoshi Hosoito
Teruya Shinjo
Affiliation:
Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu 611 Japan
Ko Mibu
Affiliation:
Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu 611 Japan
Shinichi Ogawa
Affiliation:
Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu 611 Japan
Nobuyoshi Hosoito
Affiliation:
Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu 611 Japan
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Abstract

By using UHV deposition technique, multilayered films consisting of Fe and rare-earth (Dy, Nd or Y) layers were prepared. Magnetic properties of Fe layers were investigated from 57Fe Mössbauer spectroscopy. From SQUID magnetic measurements, the behavior of rare-earth layers was studied. In Fe/Dy and Fe/Nd multilayers, there often exists a large perpendicular anisotropy. Mössbauer spectra evidenced that, in certain samples, the magnetization changes the direction, from in-plane at high temperature to perpendicular at low temperature. The origin of the perpendicular anisotropy is attributed to interface rare-earth atoms which are magnetically coupled with ferromagnetic Fe layers even at higher than their bulk Curie temperatures.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 151: Symposium G – Growth, Characterization and Properties of Ultrathin Magnetic Films and Multilayers , 1989 , 87
Copyright
Copyright © Materials Research Society 1989

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References

REFERENCES

1. Concerning metallic multilayers, review articles and references up to 1986, are presented in the following book; Shinjo, T. and Takada, T. eds. “Metallic Superlattices” (Elsevier, Amsterdam, 1987).Google Scholar
2. Ferromagnetic Fe monolayer sandwiched in between Mg layers, whose structure however is regarded as amorphous, was introduced in the following; Shinjo, T., Hosoito, N., Kawaguchi, K., Nakayama, N., Takada, T. and Endoh, Y., J. Magh. & Magh. Mater. 54–57 (1986) 737. Epitaxial ferromagnetic MnSb monolayer in between Sb layers was preliminary reported in the following and a full report is in preparation; T. Shinjo, N. Nakayama, I. Moritani and Y. Endoh, J. Phys. Soc. Jpn. 55 (1986) 2512.Google Scholar
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