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Laser-induced short- and long-range orderings of Co nanoparticles on SiO2
2006
Applied Physics Letters
Laser irradiation of ultrathin Co films leads to pattern formation by dewetting with short-range order ͑SRO͒ as well as long-range order ͑LRO͒. When a 1.5 nm thick Co film is irradiated by a single laser beam, a monomodal size distribution of particles with average diameter of 31± 10 nm and nearest-neighbor spacing of 75 nm is observed. Moreover, melting by two-beam interference irradiation produces LRO as well as SRO giving a quasi-two-dimensional arrangement of nanoparticles. The SRO is
doi:10.1063/1.2195113
fatcat:vj4tz5oysff3pcwjgh6ke5gu5m