Oxidation protective carbon layer for magnetic particles by surfactant reduction

B. Jeyadevan, Y. Suzuki, K. Tohji, I. Matsuoka

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Encapsulation of fine metal particles by graphite would not only provide an oxidation protective layer but also acts as a solid lubricant that enables high speed scanning of magnetic tapes against a writing/recording head. In this paper, we propose a novel method to produce the graphite layer on the surface of magnetic particles. First, the surfactant is adsorbed onto the particle and then reduced/decomposed by bombardment with ionized He atoms in the arc discharge chamber. As a result of this treatment, the magnetite particles are uniformly coated with a graphite layer of a few nanometers thick.

Original languageEnglish
Pages (from-to)4511-4513
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number5 PART 2
Publication statusPublished - 1996
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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