Texture-induced magnetic anisotropy of Co-Pt films

The induced magnetic anisotropy of Co-Pt films on textured Ni-P-plated Al substrates depended on the Pt content of the films and texturing conditions. The axis of easy magnetization for the Co film was along the texture lines. The surface grains for an anisotropic Co-20at.%Pt film and those for an isotropic film with the same content seemed to have almost the same shapes, and no clear grain boundaries. No elongation of the grains or grain alignment normal to the grooves was observed. The remanent magnetization measured in the circumferential and radial directions was affected strongly by the Pt content, in a similar manner to magnetostriction.<
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