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Interest in the growth of carbon nanotubes by chemical vapor deposition technique using transition 3d metals as catalyst support is still a subject of intense research. In this paper, we report the morphological and magnetic properties of Co films with varying thickness prior to and post de-wetting that enabled the formation of island-like structures. Interestingly enough, we found different magnetic states as a function of Co thickness and grain size. Moreover, the island-like Co films morphology will enable the subsequent development of carbon nanotube arrays that may enclose and/or embed the nanoparticles useful for multiple technologies.
Date of Conference: 26-30 July 2009