Negative coercivity in epitaxially grown (110) DyFe2/YFe2 superlattices

Molecular beam epitaxial methods have been used to grow single crystal Laves phase DyFe2/YFe2 superlattice samples with a (110) growth direction. Detailed magnetization curves have been obtained for YFe2 dominated multilayer samples [wDyFe2/4wYFe2]×16 with w=45, 50, and 55 Å. In particular, it is sh...

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Bibliographic Details
Published in:Applied physics letters 2001-02, Vol.78 (7), p.964-966
Main Authors: Beaujour, J-M. L., Gordeev, S. N., Bowden, G. J., de Groot, P. A. J., Rainford, B. D., Ward, R. C. C., Wells, M. R.
Format: Article
Language:English
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Summary:Molecular beam epitaxial methods have been used to grow single crystal Laves phase DyFe2/YFe2 superlattice samples with a (110) growth direction. Detailed magnetization curves have been obtained for YFe2 dominated multilayer samples [wDyFe2/4wYFe2]×16 with w=45, 50, and 55 Å. In particular, it is shown that the formation of magnetic exchange springs in the magnetically soft YFe2 layers, can be used to engineer multilayer samples with a negative coercivity. Further, by using asymmetric field cycling procedures, we have investigated the irreversible parts of the M–B loop, associated with the switching of the DyFe2 multilayers.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1344594