Crossover between two different magnetization reversal modes in arrays of iron oxide nanotubes
By J. Escrig, Julien Bachmann, Jing Jing, Mihaela Daub, D. Altbir, Kornelius Nielsch. 2008
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The magnetization reversal in ordered arrays of iron oxide nanotubes of 50 nm outer diameter grown by atomic layer deposition is investigated theoretically as a function of the tube wall thickness dw. In thin tubes ! dw! 13 nm" the reversal of magnetization is achieved by the propagation of a vortex domain boundary, while in thick tubes ! dw" 13 nm" the reversal is driven by the propagation of a transverse domain boundary. Magnetostatic interactions between the tubes are responsible for a decrease in the coercive field in the array. Our calculations are in agreement with recently reported experimental results. We predict that the crossover between the vortex and transverse modes of magnetization reversal is a general phenomenon on the length scale considered.
Subfields: Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/28d22f23eb627ad4820a4a713d07dcf1d0179e82
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In Electronic, Optical and Magnetic Materials
In Materials Chemistry
Citations in the corpus
- Microwave absorption properties of carbon nanocoils coated with highly controlled magnetic materials by atomic layer deposition. (2012, background): “In previous reports, O3 was proved to be favorable for ALD of metal oxides to obtain a highly conformal and dense thin film.(18) 20 Furthermore, the use of O3 enables growth over a much wider temperature range.”