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Title

Magnetotransport properties of high-quality cobalt nanowires grown by focused-electron-beam-induced deposition

AuthorsFernández-Pacheco, Amalio ; Teresa, José María de CSIC ORCID ; Córdoba, R.; Ibarra, M. Ricardo CSIC ORCID
KeywordsCobalt nanowires
Magnetotransport properties
Focused-electron-beam-induced deposition (FEBID)
Co content
Saturation magnetization
Nanometric magnetic materials
Issue Date12-Feb-2009
PublisherInstitute of Physics Publishing
CitationJournal of Physics D: Applied Physics 42, 055005 (2009)
AbstractHigh-quality cobalt nanowires have been grown by focused-electron-beam-induced deposition (FEBID) and their magnetic and transport properties determined. The nanowires contain up to about 95% Co atomic percentage, as measured by EDX spectroscopy, which remarkably represents a high value compared with other metal deposits grown by the same technique. The Co content has been found to correlate with the beam current used for the growth. The magnetotransport properties have been studied on individual nanowires through 4-probe measurements. For the nanowires with the highest Co content, the resistivity at room temperature is low (~40 µΩ cm), and shows metallic temperature dependence. The magnetotransport properties clearly demonstrate the ferromagnetic nature of the nanowire, with a saturation magnetization of Ms = 1329 ± 20 emu cm−3, very close to the bulk one. Due to the local character of this type of growth at targeted places and its high lateral resolution, these results pave the way for the creation of magnetic nanostructures and devices with the full potentiality of high-quality Co.
Description6 pages, 6 figures.-- PACS nrs.: 75.47.-m, 73.63.-b, 81.07.-b, 81.15.Jj.
Publisher version (URL)http://dx.doi.org/10.1088/0022-3727/42/5/055005
URIhttp://hdl.handle.net/10261/10669
DOI10.1088/0022-3727/42/5/055005
ISSN0022-3727
Appears in Collections:(ICMA) Artículos




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