Fabrication and Magnetic Properties of Arrays of Metallic Nanowires

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Science  03 Sep 1993:
Vol. 261, Issue 5126, pp. 1316-1319
DOI: 10.1126/science.261.5126.1316


Arrays of ferromagnetic nickel and cobalt nanowires have been fabricated by electrochemical deposition of the metals into templates with nanometer-sized pores prepared by nuclear track etching. These systems display distinctive characteristics because of their one-dimensional microstructure. The preferred magnetization direction is perpendicular to the film plane. Enhanced coercivities as high as 680 oersteds and remnant magnetization up to 90 percent have also been observed.