Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1797433 | Journal of Crystal Growth | 2006 | 4 Pages |
Abstract
Aligned cobalt nanodiscs have been electrodeposited on GaAs (1Â 1Â 0), (1Â 1Â 1), and (0Â 0Â 1) substrates from weakly acidic, cobalt sulphate (CoSO4) and ammonium sulphate [(NH4)2SO4] solutions. The thickness and diameter of the nanodiscs are about 50 and 500Â nm, respectively. They have an HCP crystal structure with their [0Â 0Â 0Â 1] c-axis perpendicular to the disc normal and aligned with the low mismatch in-plane GaAs ã1Â 1Â 0ã directions. They dominate the growth after an initial layer containing a mixture of BCC and HCP cobalt. Random alignment results for deposition from pure CoSO4 electrolyte [no (NH4)2SO4], or acidic [by adding H2SO4], or basic [by adding (NH4)OH] CoSO4 solutions.
Related Topics
Physical Sciences and Engineering
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Condensed Matter Physics
Authors
Zhi Liang Bao, Karen L. Kavanagh,