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- Title
Correlation between morphology and magnetic properties of electrochemically produced cobalt powder particles.
- Authors
MAKSIMOVIĆ, VESNA M.; NIKOLIĆ, NEBOJŠA D.; KUSIGERSKI, VLADAN B.; BLANUŠA, JOVAN L.
- Abstract
Cobalt 3D powder particles were successfully prepared by galvanostatic electrodeposition. The electrodeposited cobalt powders were characterized by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and SQUID magnetometry. It was shown that the morphology, structure and magnetic properties of cobalt particles were closely associated and could be easily controlled by adjusting the electrodeposition process parameters. The morphology of cobalt powder particles was strongly affected by the hydrogen evolution reaction as a parallel reaction to cobalt electrodeposition. Depending on the applied current density, two types of powder particles were formed: dendrites at lower and spongy-like particles at higher current densities. Morphologies and structures of powder particles were correlated with their magnetic properties, and compared with those of the bulk cobalt. In comparison with the properties of bulk cobalt, the obtained 3D structures exhibited a decreased saturation magnetization (MS), but an enhanced coercivity (HC), which was explained by their peculiar morphology.
- Subjects
COBALT compounds; MAGNETIC properties of transition metal compounds; ELECTROCHEMICAL analysis; METAL powders; PARTICLE size distribution; CRYSTAL morphology; CHEMICAL sample preparation
- Publication
Journal of the Serbian Chemical Society, 2015, Vol 80, Issue 2, p197
- ISSN
0352-5139
- Publication type
Article
- DOI
10.2298/JSC200814104M