Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8157606 | Journal of Magnetism and Magnetic Materials | 2014 | 5 Pages |
Abstract
We report on a strong perpendicular magnetic anisotropy in [CoFe 0.4Â nm/Pd t]6 (t=1.0-2.0Â nm) multilayers fabricated by DC sputtering in an ultrahigh vacuum chamber. Saturation magnetization, Ms, and uniaxial anisotropy, Ku, of the multilayers decrease with increasing the spacing thickness; with a Ms of 155Â emu/cc and a Ku of 1.14Ã105Â J/m3 at a spacing thickness of t=2Â nm. X-ray absorption spectroscopy and X-ray magnetic circular dichroism measurements reveal that spin and orbital magnetic moments of Co and Fe in CoFe film decrease as a function of Pd thickness, indicating the major contribution of surface/interfacial magnetism to the magnetic properties of the film.
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Authors
D.-T. Ngo, Z.L. Meng, T. Tahmasebi, X. Yu, E. Thoeng, L.H. Yeo, A. Rusydi, G.C Han, K.-L. Teo,