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Please use this identifier to cite or link to this item: http://purl.org/purl/4372

Title: On the Growth Mechanism of Nickel and Cobalt Nanowires and Comparison of Their Magnetic Properties
Authors: Anantharaman, M R
Shaijumon, M M
Narayanan, T N
Ajayan, P M
Keywords: Magnetic nanowires
mobility assisted growth
magnetostatic interaction
magnetisation switching
Issue Date: 28-Oct-2008
Publisher: Springer
Abstract: Magnetic nanowires (NWs) are ideal materials for the fabrication of various multifunctional nanostructures which can be manipulated by an external magnetic fi eld. Highly crystalline and textured nanowires of nickel (Ni NWs) and cobalt (Co NWs) with high aspect ratio (~330) and high coercivity have been synthesized by electrodeposition using nickel sulphate hexahydrate (NiSO4·6H2O) and cobalt sulphate heptahydrate (CoSO4·7H2O) respectively on nanoporous alumina membranes. They exhibit a preferential growth along〈110〉. A general mobility assisted growth mechanism for the formation of Ni and Co NWs is proposed. The role of the hydration layer on the resulting one-dimensional geometry in the case of potentiostatic electrodeposition is verified. A very high interwire interaction resulting from magnetostatic dipolar interactions between the nanowires is observed. An unusual low-temperature magnetisation switching for fi eld parallel to the wire axis is evident from the peculiar high fi eld M(T) curve
Description: Nano Res (2008) 1: 465 473
URI: http://dyuthi.cusat.ac.in/purl/4372
Appears in Collections:Dr. M R Anantharaman

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