Abstract
Cobalt nanowires were deposited within nanoporous alumina template by direct current electrodeposition. The effect of pH on temperature dependent hysteresis behavior and magnetic properties of Co nanowires has been analyzed and discussed in detail. The easy axis of magnetization was observed to change uniformly from parallel to perpendicular direction to the wire axis with decrease of temperature from 400K to 5K. The effect could be attributed to increased magnetocrystalline anisotropy at lower temperatures (e.g. 5K). Strong pH dependence of cross-over temperature that changes from 300K to 50K was observed and the change was delayed with increase of pH.
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