Interlayer exchange coupling in Co/Ru/Co trilayers

The dependence of the interlayer exchange coupling in Si(001)/Ta/Co/Ru/Co/Ta trilayer on the thickness of the top Co layer is investigated. A strong in-plane uniaxial anisotropy is created in the magnetic layers by the shape anisotropy of an obliquely sputtered Ta underlayer, as confirmed by magneto...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2005-02, Vol.286, p.468-472
Main Authors: Gubbiotti, G., Tacchi, S., Carlotti, G., Socino, G., Spizzo, F., Zhao, Zhiya, Mani, P., Mankey, G.J.
Format: Article
Language:English
Subjects:
Brillouin light scattering
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Giant magnetoresistance
Interlayer coupling
Magnetic multilayers
Magnetic properties and materials
Magnetotransport phenomena, materials for magnetotransport
Physics
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Summary:The dependence of the interlayer exchange coupling in Si(001)/Ta/Co/Ru/Co/Ta trilayer on the thickness of the top Co layer is investigated. A strong in-plane uniaxial anisotropy is created in the magnetic layers by the shape anisotropy of an obliquely sputtered Ta underlayer, as confirmed by magnetometry and Brillouin light scattering measurements. The evolution of the magnetic properties, such as the magnetization at remanence and the saturation fields of the hysteresis loops and the giant magnetoresistance, is discussed in terms of the bilinear and biquadratic exchange coupling coefficients.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2004.09.100