Co-Cr-C/Ag/Ti膜の磁気特性に与えるAg中間層効果

概要

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The magnetic properties of Co-Cr-C/Ag/ Ti films were investigated in relation to Ag interlayer thickness t_<Ag>. An Ag interlayer 10Å thick enhanced the perpendicular orientation of the c-axis of hcp Co-alloy crystallites, resulting in the highest perpendicular coercivity H_<C⊥> and the largest squareness ratio SQR_⊥ of the perpendicular hysteresis loop. Atomic force microscope (AFM) observation of Ag/Ti films with various t_<Ag>, sowed that the surface morphology of them became finest and surface roughness became large at t_<Ag>=10Å. The morphology of the Co-Cr-C layer corresponds closely to that of the Ag/Ti underlayer. The size of the hcp-Co alloy particles, therefore, became finest at t_<Ag>=10 Å, and the large perpendicular coercivity can be explained by the c-axis orientation of the fine hcp-Co alloy crystallites.
社団法人日本磁気学会の論文
2001-04-15