Morphology Dependent Magnetic Properties of Two-Dimensional α-Fe2O3 Ordered Nanostructured Arrays
Magnetic properties of two-dimensional α-Fe2O3 ordered bowl-like pore and ring arrays, fabricated by solution-dipping on a colloidal monolayer, were studied. All the α-Fe2O3 nanostructured arrays exhibit weak ferromagnetic properties at room temperature, while the hysteresis loops strongly depend on the morphology of the arrays. Some novel magnetic properties, such as plateau regions and jumps in hysteresis loops, have been observed for the ring and bowl-like pore arrays at room temperature, respectively. The morphology-dependent magnetic properties will exhibit the potential applications in nanodevices, such as giant magnetoresistance spin-valve devices and magnetic data storage.
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Document Type: Research Article
Publication date: May 1, 2009
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