Journal
IEEE TRANSACTIONS ON MAGNETICS
Volume 38, Issue 5, Pages 2571-2573Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMAG.2002.801955
Keywords
electrodeposition; micro-magnetic modeling; nanowire array; patterned media; porous alumina
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We report on the micromagnetic properties of highly regular hexagonal arrays of Ni nanowires, fabricated by means of electodeposition in self-ordered porous alumina. Arrays with interpore distances of 65 and 100 nm and pore diameters of 25 and 30 nm are investigated. From hysteresis loops obtained from measurements with a superconducting quantum interference device (SQUID) magnetometer, the switching field H-sw of the nanowires and its deviation DeltaH(sw) is derived. Dynamic micromagnetic modeling using the finite-element method is applied to study the reversal process in an external field. It is shown that starting at the wires' ends, the reversal occurs by means of 180degrees head-on domain walls propagating along the wire.
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