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Updated: Jun 23, 2026
Fabrication of Periodic Gold Nanocup Arrays Using Colloidal Lithography
Published on: September 2, 2017
Co/Pt nanodot arrays fabricated via pulsed laser deposition using the phase-separated diblock copolymer film as a
Sung Chan Park1, Joona Bang, Jeong Sook Ha
1Department of Chemical and Biological Engineering, Korea University, 5-1 Anam-dong, Seongbuk-ku, Seoul 136-701, Korea.
Abstract:
We fabricated hexagonal arrays of Co/Pt nanodots on Si surfaces by pulsed laser deposition (PLD) using cylindrically phase-separated polystyrene-b-poly(methylmethacrylate) (PS-b-PMMA) diblock copolymer thin films as templates after the removal of PMMA. The size and the separation of the nanodots were 23 and 40 nm, respectively, and the density of the nanodots was 1.5 x 10(11)/cm2. The magnetic properties of nanodot arrays measured by vibrating sample magnetometer were compared with those of PLD grown film. The films showed magnetic anisotropy with an easy axis in the in-plane direction, whereas no noticeable anisotropy was observed for nanodot arrays. In addition, the saturation magnetization (Ms) of both the Co/Pt nanodots and the film increased with the Pt content.
