Manufacture method of nano point array with perpendicular magnetic anisotropy
An anisotropic, perpendicular magnetic technology, used in the manufacture of record carriers, etc., can solve the problems of film damage, deterioration of perpendicular magnetic anisotropy, damage to the edge of nano-dots, etc.
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[0021] First, a single-layer hexagonal close-packed colloidal array spherical substrate was prepared by self-assembly technology. figure 1 Middle a. Spread the colloidal spheres on the water surface; b. Make the spheres monolayer close together to form an ordered monolayer film; c. Transfer the ordered monolayer film to the substrate. The formed single-layer colloidal array is a hexagonal close-packed structure (as attached figure 2 shown).
[0022] The specific steps are: immerse the silicon substrate in 10% sodium dodecyl sulfate solution for 24 hours to obtain a hydrophilic substrate surface. Take 5 milliliters of 10wt.% polystyrene colloidal solution, dilute it with 5 milliliters of ethanol, and then take about 5 microliters and drop it on the surface of the soaked substrate, and the solvent and the beads spread on the surface of the substrate. The substrate piece is slowly immersed in a container containing deionized water, the container has a cross-sectional area of ...
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