Enhanced magnetic coercivities in Fe nanowires

N. Grobert, W. K. Hsu, Y. Q. Zhu, J. P. Hare, H. W. Kroto, D. R.M. Walton, Mauricio Terrones Maldonado, H. Terrones, Ph Redlich, M. Rühle, R. Escudero, F. Morales

Research output: Contribution to journalArticle

290 Citations (Scopus)

Abstract

We describe a way of generating films (<2mm2; < 40 μm thick) of aligned Fe-filled carbon nanotubes. These Fe nanowires are usually composed of single Fe crystals, and have dimensions from 5-40 nm outer diameter and < 10 μm in length. The carbon tubes, which coat the wires, have external diameters of ∼ 20-70 nm and are <40 μm in length. High-resolution electron energy loss spectroscopy, x-ray powder diffraction, and elemental mapping of the tubular structures reveal only characteristic metallic signals and the effective absence of oxygen (or any other nonmetallic element) within the wires. The material exhibits coercivities in the 430-1070 Oe range, i.e., greater than those reported for Ni and Co nanowires.

Original languageEnglish (US)
Pages (from-to)3363-3365
Number of pages3
JournalApplied Physics Letters
Volume75
Issue number21
DOIs
StatePublished - Nov 22 1999

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coercivity
nanowires
wire
x ray spectroscopy
energy dissipation
carbon nanotubes
electron energy
tubes
carbon
high resolution
single crystals
oxygen
diffraction

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Grobert, N., Hsu, W. K., Zhu, Y. Q., Hare, J. P., Kroto, H. W., Walton, D. R. M., ... Morales, F. (1999). Enhanced magnetic coercivities in Fe nanowires. Applied Physics Letters, 75(21), 3363-3365. https://doi.org/10.1063/1.125352
Grobert, N. ; Hsu, W. K. ; Zhu, Y. Q. ; Hare, J. P. ; Kroto, H. W. ; Walton, D. R.M. ; Terrones Maldonado, Mauricio ; Terrones, H. ; Redlich, Ph ; Rühle, M. ; Escudero, R. ; Morales, F. / Enhanced magnetic coercivities in Fe nanowires. In: Applied Physics Letters. 1999 ; Vol. 75, No. 21. pp. 3363-3365.
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Grobert, N, Hsu, WK, Zhu, YQ, Hare, JP, Kroto, HW, Walton, DRM, Terrones Maldonado, M, Terrones, H, Redlich, P, Rühle, M, Escudero, R & Morales, F 1999, 'Enhanced magnetic coercivities in Fe nanowires', Applied Physics Letters, vol. 75, no. 21, pp. 3363-3365. https://doi.org/10.1063/1.125352

Enhanced magnetic coercivities in Fe nanowires. / Grobert, N.; Hsu, W. K.; Zhu, Y. Q.; Hare, J. P.; Kroto, H. W.; Walton, D. R.M.; Terrones Maldonado, Mauricio; Terrones, H.; Redlich, Ph; Rühle, M.; Escudero, R.; Morales, F.

In: Applied Physics Letters, Vol. 75, No. 21, 22.11.1999, p. 3363-3365.

Research output: Contribution to journalArticle

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AU - Hsu, W. K.

AU - Zhu, Y. Q.

AU - Hare, J. P.

AU - Kroto, H. W.

AU - Walton, D. R.M.

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AU - Terrones, H.

AU - Redlich, Ph

AU - Rühle, M.

AU - Escudero, R.

AU - Morales, F.

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Grobert N, Hsu WK, Zhu YQ, Hare JP, Kroto HW, Walton DRM et al. Enhanced magnetic coercivities in Fe nanowires. Applied Physics Letters. 1999 Nov 22;75(21):3363-3365. https://doi.org/10.1063/1.125352