A K Gangopadhyay et al 2007 Nanotechnology 18 485606 doi:10.1088/0957-4484/18/48/485606
A K Gangopadhyay1,2,4, H Krishna1,2, C Favazza1,2, C Miller2,3 and R Kalyanaraman1,2,4
Show affiliationsTemplates are widely used to produce artificial nanostructures. Here, laser-assisted self-organization has been used to form one- and two-dimensional (D) nanoarrays of Cu nanocrystals. Using these nanoarrays as a template, a 2D patterned ferromagnetic nanostructure of FeCrSi nanocrystals has been produced by heterogeneous nucleation and growth of nanocrystals by partial devitrification from an amorphous Fe64.5Cr10Si13.5B9Nb3 alloy with the Cu nanoparticles acting as catalytic nucleation sites. The interaction among the ferromagnetic nanocrystals via the residual amorphous matrix can be controlled by suitable choice of the amorphous alloy composition. Although demonstrated for a ferromagnetic system, the processing method may have much wider applicability for producing artificial nanostructures of a wide variety of materials when materials-specific catalysts and amorphous alloy compositions are judiciously chosen.
Issue 48 (5 December 2007)
Received 10 June 2007, in final form 18 July 2007
Published 1 November 2007
A K Gangopadhyay et al 2007 Nanotechnology 18 485606
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