Fabrication and thermal stability of Co nanopillars in diamondlike carbon films
by Jiechao C. Jiang, Fengli Wang, Efstathios I. Meletis
International Journal of Nanomanufacturing (IJNM), Vol. 2, No. 1/2, 2008

Abstract: Co/Diamondlike Carbon (DLC) nanocomposite films consisting of well-defined, self-organised nanopillars were successfully fabricated by plasma-assisted magnetron sputtering. The nanopillars were identified as a defect-rich ε-Co structure. The shape of such nanopillars is stable up to 350°C and dissociates into several nano particles at 500°C. The defective ε-Co structure of the nanopillars is stable up to 250°C and then transforms into: polycrystalline δ^'–Co₂C at 300°C; a textured structure of lamellar δ^'–Co₂C and α-Co with a minor phase of Co₃C at 350°C; α-Co at 500°C. The underlying processes in this nano scale manufacturing are discussed.

Online publication date: Sat, 19-Apr-2008

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