The effect of the ordering degree of Ni nanowire array on its magnetic and magneto-optical properties has been investigated.Nickel nanowires were embedded in an alumina matrix and fixed to a Si substrate.Two different fabrication processes of the Ni nanowire arrays have been followed.The first one is based on imprint lithography,and it is described in detail in ref.[1].In the second fabrication method,a two step anodisation process based on the Masuda approach [2] has been used.As an example,scanning electron micrographs of an array of Ni nanowires with length -4 mum,column spacing 500 nm,and column diameter 180 nm are shown in Fig.1.
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