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Erschienen in:
01.02.2010
The growth and characterisation of Ni5Zn21 dendrites
Erschienen in: Journal of Materials Science | Ausgabe 4/2010
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Abstract
We have investigated the growth of Ni–Zn alloys by a dc electrodeposition method and a pulse dc electrodeposition method with different pulse frequencies, under otherwise the same growth conditions. Dendritic growth is found in the Ni–Zn alloys produced by pulse dc electrodeposition, whereas such growth is absent in those fabricated by dc electrodeposition. The morphology of the as-grown Ni–Zn dendrites is highly influenced by the pulse frequency. The possible growth mechanism has been discussed. The corresponding magnetic properties are investigated at 5 K using a superconducting quantum interference device. We have observed a clear variation in the magnetisation behaviour as the pulse frequency is changed, which is likely to be attributable to the presence of precipitation of Ni nanoparticles.