Preparation and nanoscale characterization of electrodeposited CoFe-Cu multilayer nanowires

Agarwal S, Pohl D, Patra AK, Nielsch K, Khatri MS (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Materials Chemistry and Physics Elsevier

Book Volume: 230

Pages Range: 231-238

DOI: 10.1016/j.matchemphys.2019.03.065

Abstract

CoFe-Cu multilayered nanowires have been fabricated by pulse electrodeposition into the pores of ∼100 nm diameter anodized aluminum oxide (AAO) templates. Here, we investigate three samples, where the magnetic layer thickness is increased by extending the pulse time t CoFe 10 s, 13 s and 16 s while keeping the non-magnetic layer thickness constant (t Cu = 30 s). Scanning electron microscopy and transmission electron microscopy confirm uniform, continuous and densely packed wires. By increasing the CoFe deposition time the aspect ratio enhanced and a layer stacking is demonstrated. The EDX line scan along the single nanowire indicates that they are Cu-rich with the composition of 10–15% Co, 0–5% Fe and 75–80% Cu. Magnetic measurements reveal a temperature dependency of the coercivity. The increase in coercivity is associated with the inherent shape and magnetocrystalline anisotropy of the nanowires. Magnetic measurements at low temperature exhibited the increase in coercivity of CoFe-Cu nanowires as a result of the freezing of thermal fluctuations.

Involved external institutions

National Institute of Technology Uttarakhand IN India (IN) Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden DE Germany (DE) Central University of Rajasthan IN India (IN)

How to cite

APA:

Agarwal, S., Pohl, D., Patra, A.K., Nielsch, K., & Khatri, M.S. (2019). Preparation and nanoscale characterization of electrodeposited CoFe-Cu multilayer nanowires. Materials Chemistry and Physics, 230, 231-238. https://doi.org/10.1016/j.matchemphys.2019.03.065

MLA:

Agarwal, Shivani, et al. "Preparation and nanoscale characterization of electrodeposited CoFe-Cu multilayer nanowires." Materials Chemistry and Physics 230 (2019): 231-238.

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