African Journal of
Pure and Applied Chemistry

  • Abbreviation: Afr. J. Pure Appl. Chem.
  • Language: English
  • ISSN: 1996-0840
  • DOI: 10.5897/AJPAC
  • Start Year: 2007
  • Published Articles: 357

Full Length Research Paper

The magnetic properties of Co-Mo-S coatings by electrodeposition

H. E. El-Feky
Department of Chemistry, Faculty of Science, University of Fayoum, Fayoum-Egypt
Email: [email protected]

  •  Accepted: 14 August 2010
  •  Published: 31 March 2011

Abstract

The nano-coated Co-s-Mo alloys were electrodeposited from electrolytic solutions containing CoSO4, Na2MoO4, ascorbic acid, thiourea, and hexamine. The coated Co-S-Mo alloys were obtained evolving to hard magnetic behaviour. The coatings characterised by metallic lustre. The surface morphology of the coating was investigated by scanning electron microscope (SEM). The many alloys were electrodeposited using these baths. Phase structure of the coatings was analyzed by the X-ray diffraction (XRD), the XRD patterns show sharp peaks for face-cantered cubic fcc (112) and hexagonal close packed hcp (110) structures. The molar magnetic susceptibility and effective magnetic moment were measured using Faraday's method. The composition and magnetic properties of the coatings greatly depended on the composition of the electrolytic bath mainly [] / [Co2+] ratio. The drastic modification of the magnetic properties of the coatings was closely related to the presence of the additives and inclusion of sulphur in the coatings, the increase of sulphur leads to decrease of the molar magnetic susceptibility.

 

Key word: Co-S-Mo alloys, electrodeposition, magnetic properties.