Co/Rh(111)多層膜の層間磁気結合と磁気異方性

概要

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It is known that a Co/Rh multiplayers system show strong interlayer exchange coupling and perpendicular magnetic anisotropy. In this study, we fabricated two series of Co/Rh(111) multilayers: one with a wedgeshaped Rh layer and a Co layer of constant thickness, and the other with Rh layers constant thickness and wedge-shaped Co layers. The former were used for investigation of the interlayer coupling and the latter for investigation of magnetic perpendicular anisotropy. For the Rh wedged multilayers, spin flip was observed in the M-H curve, indicating the coexistence of anti-ferro magnetic coupling and perpendicular anisotropy. The Co wedged multilayers exhibited the perpendicular magnetic anisotropy for Co layer thicknesses less than 12 A. From the Co layer thickness dependence of the magnetic perpendicular anisotropy, we found that the perpendicular anisotropy of Co/Rh (111) can be dominated by the strain produced by lattice mismatch.
社団法人日本磁気学会の論文
2004-02-01