Electrodeposited Co{sub 93.2}P{sub 6.8} nanowire arrays with core-shell microstructure and perpendicular magnetic anisotropy

Journal Article · Thu May 07 00:00:00 EDT 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4919124· OSTI ID:22410168

Nasirpouri, F.; Peighambari, S. M. ^[1]; Ognev, A. V.; Sukovatitsina, E. V.; Modin, E. B.; Chebotkevich, L. A. ^[2]; Komogortsev, S. V. ^[3]; Bending, S. J. ^[4]

---

1. Faculty of Materials Engineering, Sahand University of Technology, Tabriz 51335-1996 (Iran, Islamic Republic of)
2. School of Natural Sciences, Far Eastern Federal University, Vladivostok (Russian Federation)
3. Institute of Physics, SB Russian Academy of Sciences, Krasnoyarsk 660036 (Russian Federation)
4. Department of Physics, University of Bath, Bath (United Kingdom)

We demonstrate the formation of an unusual core-shell microstructure in Co{sub 93.2}P{sub 6.8} 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.

• OSTI ID: 22410168
• Journal Information: Journal of Applied Physics, Vol. 117, Issue 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALTERNATING CURRENT
ALUMINIUM OXIDES
AMORPHOUS STATE
ANISOTROPY
BORON ADDITIONS
COBALT
COBALT BASE ALLOYS
COERCIVE FORCE
CRYSTALS
ELECTRODEPOSITION
FERROMAGNETIC MATERIALS
FERROMAGNETISM
MAGNETIZATION
MICROSTRUCTURE
NANOWIRES
PHASE STUDIES
TRANSMISSION ELECTRON MICROSCOPY