Width-Dependent Transition of Magnetic Domain Configuration in Nanostructured CoFe/Pt Multilayered Nanowires

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We report on the basis of experiments that magnetic domain structures exhibit a transition between single and dendrite domains with respect to the width of ferromagnetic nanowires. This transition is directly observed in CoFe/Pt multilayered nanowires having a width in the range of 580 nm to 4.2 mu m with a magnetic force microscope. Nanowires wider than 1.5 mu m show typical dendrite domain patterns, whereas the nanowires narrower than 690 nm exhibit single domain patterns. The transition occurs gradually between these widths, which are similar to the typical widths of the dendrite domains. Such a transition affects the strength of the domain wall propagation field; this finding was made by using a time-resolved magneto-optical Kerr effect microscope, and shows that the domain wall dynamics also exhibit a transition in accordance with the domain configuration.
Publisher
KOREAN MAGNETICS SOC
Issue Date
2012-12
Language
English
Article Type
Article
Keywords

THIN-FILMS; PERPENDICULAR ANISOTROPY; REVERSAL; FIELD

Citation

JOURNAL OF MAGNETICS, v.17, no.4, pp.242 - 244

ISSN
1226-1750
DOI
10.4283/JMAG.2012.17.4.242
URI
http://hdl.handle.net/10203/214173
Appears in Collection
PH-Journal Papers(저널논문)
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