Long range ordering in self-assembled Ni arrays on patterned Si

• Published in: Journal of magnetism and magnetic materials Vol. 316; no. 2; pp. e78 - e81
• Main Authors: Gonzalez, D.C., Kiziroglou, M.E., Li, X., Zhukov, A.A., Fangohr, H., de Groot, P.A.J., Barttlet, P.N., de Groot, C.H.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-09-2007
• Subjects: Long-range ordering; Magnetic storage; Micromagnetic simulation; Self-assembly; Shape anisotropy; Silicon; Magnetic storage; Self-assembly; 81.16.Dn; Long-range ordering; Silicon; 81.15.Pq; Shape anisotropy; 75.75.+a; Micromagnetic simulation
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2007.02.059

We have succeeded in aligning self-assembled structures by using a lithographically defined stripe. The 140
nm wide by 100
nm high SiO
2 strip is shown to guide the assembly of 500
nm latex spheres so that spheres are aligned along the strip and are in registration on either side of the strip. This method can be used to increase long-range ordering in magnetic storage systems without compromising the density. Inverse sphere Ni arrays were made by electrodeposition through the latex template. We also show that the hexagonal symmetry of the resulting inverse sphere Ni arrays can be simulated using the approach presented below.