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Magnetic properties improvement through off time between pulses and annealing in pulse electrodeposited CoZn nanowires

journal contribution
posted on 30.03.2021, 10:44 by M Almasi Kashi, A Ramazani, Zohreh Fallah
CoZn alloy nanowire arrays embedded in anodic aluminum oxide (AAO) template were fabricated by alternative current (ac) pulse electrodeposition. Various off times between pulses in an electrolyte with constant concentration of Co+2 and Zn+2 and acidity of 4 were employed. The effect of deposition parameters on the alloy contents, microstructures and magnetic properties of CoxZn1−x nanowires were studied. It is shown that, Co content increased by increasing the off time between pulses. This phenomenon enables us to fabricate Zn and Co-rich nanowires by adjusting the off time during the deposition procedure. Increasing the off time more than 200 ms increased the coercivity and squareness of CoZn nanowire arrays. A significantincrease in the coercivity of CoZn nanowires was observed after annealing which was varied for the samples fabricated with different electrodeposition conditions. A coercivity of 1785 Oe was obtained for the annealed sample (a sample fabricated with 50 ms off time) from initially 240 Oe.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

Journal of Alloys and Compounds

Volume

509

Issue

35

Pages

8845 - 8849

Publisher

Elsevier BV

Version

VoR (Version of Record)

Rights holder

© Elsevier

Acceptance date

22/06/2011

Publication date

2011-06-29

Copyright date

2011

ISSN

0925-8388

Language

en

Depositor

Dr Zohreh Fallah. Deposit date: 25 March 2021