Influence of crystalline structure and sulfur inclusion on corrosion properties of electrodeposited CoNiFe soft magnetic films

Tetsuya Osaka, Madoka Takai, Yoshimichi Sogawa, Toshiyuki Momma, Keishi Ohashi, Mikiko Saito, Kazuhiko Yamada

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

The corrosion resistance of soft magnetic films is an important property to be considered in the manufacture of magnetic devices. We investigated the corrosion behavior of the electrodeposited CoNiFe film with desired soft magnetic properties by varying the crystalline structure and the amount of included sulfur. The corrosion property in 2.5% NaCl solution depends largely on the sulfur content and also on the structure of the film. Although the CoNiFe film contains more than 13 atom % Fe, the film of face-centered to body-centered cubic mixed crystals exhibits a high anticorrosion property because of very small grain size with essentially no sulfur inclusion (<0.1 atom %).

Original languageEnglish
Pages (from-to)2092-2096
Number of pages5
JournalJournal of the Electrochemical Society
Volume146
Issue number6
DOIs
Publication statusPublished - 1999 Jun 1

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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