Electrodeposited Co93.2P6.8 nanowire arrays with core-shell microstructure and perpendicular magnetic anisotropy

F. Nasirpouri, S. M. Peighambari, A. S. Samardak, A. V. Ognev, E. V. Sukovatitsina, E. B. Modin, L. A. Chebotkevich, S. V. Komogortsev, S. J. Bending

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Abstract

We demonstrate the formation of an unusual core-shell microstructure in Co93.2P6.8 nanowires electrodeposited by alternating current (ac) in an alumina template. By means of transmission electron microscopy, it is shown that the coaxial-like nanowires contain amorphous and crystalline phases. Analysis of the magnetization data for Co-P alloy nanowires indicates that a ferromagnetic core is surrounded by a weakly ferromagnetic or non-magnetic phase, depending on the phosphor content. The nanowire arrays exhibit an easy axis of magnetization parallel to the wire axis. For this peculiar composition and structure, the coercivity values are 2380 ± 50 and 1260 ± 35 Oe, parallel and perpendicular to the plane directions of magnetization, respectively. This effect is attributed to the core-shell structure making the properties and applications of these nanowires similar to pure cobalt nanowires with an improved perpendicular anisotropy.
Original languageEnglish
Article numberE715
JournalJournal of Applied Physics
Volume117
Issue number17
DOIs
Publication statusPublished - 7 May 2015

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nanowires
microstructure
anisotropy
magnetization
phosphors
coercivity
alternating current
cobalt
templates
aluminum oxides
wire
transmission electron microscopy

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Nasirpouri, F., Peighambari, S. M., Samardak, A. S., Ognev, A. V., Sukovatitsina, E. V., Modin, E. B., ... Bending, S. J. (2015). Electrodeposited Co93.2P6.8 nanowire arrays with core-shell microstructure and perpendicular magnetic anisotropy. Journal of Applied Physics, 117(17), [E715]. https://doi.org/10.1063/1.4919124

Electrodeposited Co93.2P6.8 nanowire arrays with core-shell microstructure and perpendicular magnetic anisotropy. / Nasirpouri, F.; Peighambari, S. M.; Samardak, A. S.; Ognev, A. V.; Sukovatitsina, E. V.; Modin, E. B.; Chebotkevich, L. A.; Komogortsev, S. V.; Bending, S. J.

In: Journal of Applied Physics, Vol. 117, No. 17, E715, 07.05.2015.

Research output: Contribution to journalArticle

Nasirpouri, F, Peighambari, SM, Samardak, AS, Ognev, AV, Sukovatitsina, EV, Modin, EB, Chebotkevich, LA, Komogortsev, SV & Bending, SJ 2015, 'Electrodeposited Co93.2P6.8 nanowire arrays with core-shell microstructure and perpendicular magnetic anisotropy', Journal of Applied Physics, vol. 117, no. 17, E715. https://doi.org/10.1063/1.4919124
Nasirpouri F, Peighambari SM, Samardak AS, Ognev AV, Sukovatitsina EV, Modin EB et al. Electrodeposited Co93.2P6.8 nanowire arrays with core-shell microstructure and perpendicular magnetic anisotropy. Journal of Applied Physics. 2015 May 7;117(17). E715. https://doi.org/10.1063/1.4919124
Nasirpouri, F. ; Peighambari, S. M. ; Samardak, A. S. ; Ognev, A. V. ; Sukovatitsina, E. V. ; Modin, E. B. ; Chebotkevich, L. A. ; Komogortsev, S. V. ; Bending, S. J. / Electrodeposited Co93.2P6.8 nanowire arrays with core-shell microstructure and perpendicular magnetic anisotropy. In: Journal of Applied Physics. 2015 ; Vol. 117, No. 17.
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