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Single-Crystal Growth of Nickel Nanowires: Influence of Deposition Conditions on Structural and Magnetic Properties

Cortés, Andrea and Riveros, Gonzalo and Palma, Juan L. and Denardin, Juliano C. and Marotti, Ricardo E. and Dalchiele, Enrique A. and Gómez, Humberto (2009) Single-Crystal Growth of Nickel Nanowires: Influence of Deposition Conditions on Structural and Magnetic Properties. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 9 (3). p. 1992. ISSN 1533-4880

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Official URL: http://dx.doi.org/10.1166/jnn.2009.374

Abstract

This paper examines the influence of electrodeposition potential, pore size, pH, composition, and temperature of the electrolytic bath on the structure of nickel nanowires arrays electrodeposited into anodic alumina oxide porous membranes. Scanning electron microscopy, X-ray diffraction, and transmission electron microscopy analysis were employed to characterize the structural and morphological properties of the nanowires. Results show that the electrodeposition potential controls the growth of nickel nanowires along some preferential crystallographic planes. At −0.90 V (vs. Ag/AgCl) single crystalline nanowires with a strong (111) orientation were obtained. High temperatures and a moderately acid pH solution contributed to improve the single crystalline character of nanowires. The presence of chloride ions produced polycrystalline nanowires at low temperature and single crystalline nanowires at high temperature. The influence of the electrodeposition potential in their magnetic anisotropies is also reported.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
ID Code:7780
Deposited By:M T V
Deposited On:23 Nov 2009 13:09
Last Modified:23 Nov 2009 13:09

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