Dependence of microstructure and magnetic properties of FePt films on Cr90Ru10 underlayers

The effect of the thickness of Cr90Ru10 underlayers on the microstructure and magnetic properties of FePt films has been studied. Experimental results showed that the FePt films grown on the Cr90Ru10 underlayers exhibited a (001) preferred orientation with out-of-plane magnetic anisotropy. The degre...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2005-01, Vol.285 (3), p.443-449
Main Authors: Ding, Y.F., Chen, J.S., Liu, E., Wang, J.P.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cr90Ru10 underlayer
Exact sciences and technology
FePt film
Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures)
Magnetic properties and materials
Magnetic properties of surface, thin films and multilayers
Physics
Preferred orientation
Sputtering
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Summary:The effect of the thickness of Cr90Ru10 underlayers on the microstructure and magnetic properties of FePt films has been studied. Experimental results showed that the FePt films grown on the Cr90Ru10 underlayers exhibited a (001) preferred orientation with out-of-plane magnetic anisotropy. The degree of the FePt(001) preferred orientation was closely related to that of the Cr(002) preferred orientation. The degree of ordering of the FePt films increased with the thickness of the Cr90Ru10 underlayers. The angular dependence of the coercivity curves suggested that an incoherent curling rotational mode be a dominant magnetic reversal mechanism in the FePt films at various Cr90Ru10 underlayer thicknesses.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2004.08.023