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Electrodeposition of Sm-Co alloy films with nanocrystalline/amorphous structures from a sulphamate aqueous solution

  • Beihang University

Research output: Contribution to journalArticlepeer-review

Abstract

Sm-Co alloys as permanent magnetic materials have attracted considerable interest for their application in the miniaturization of electronic devices. However, a facile method for depositing Sm-Co alloy films is still urgently needed. In this work, we exploited a simple aqueous electrodeposition approach to prepare Sm-Co films. Electrodeposition was realized by galvanostatic electrolysis from a stable sulfamate aqueous solution. The influence of the applied current density on the composition, morphology, structure and magnetic properties of the Sm-Co films was studied. Samarium was successfully incorporated into the films by the induced effect of Co(II) ions. Manipulating the current density varied the samarium content from 5.8 to 25.3 at%. Sm-Co nanosheets were discovered and were determined to have a mixed nanocrystalline/amorphous character. Furthermore, the electrodeposited Sm-Co films exhibited an obviously enhanced coercivity compared with that of other reported films.

Original languageEnglish
Pages (from-to)11330-11342
Number of pages13
JournalInternational Journal of Electrochemical Science
Volume12
Issue number12
DOIs
StatePublished - 2017

Keywords

  • Aqueous solution
  • Electrodeposition
  • Nanocrystalline/amorphous
  • Nanosheets
  • Sm-Co films

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