Effect of N2 additive gas during sputtering on magnetic properties and microstructure of CoB/Pd multilayered media

Toru Asahi, Mutsumi Tanaka, Junichi Sayama, Jun Kawaji, Satoshi Matsunuma, Tetsuya Osaka

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Effects of N2 additive gas and/or substrate heating during the sputtering of [CoB/Pd]20 multilayered films on the magnetic properties and microstructure were investigated. The [CoB/Pd]20 film fabricated at 20 °C by adding N2 gas during sputtering possessed the finest grain size and the smallest magnetic cluster size among media fabricated in this study although the film sputter-deposited at 260 °C by adding N2 gas exhibited the weakest intergranular exchange coupling. It was revealed that the double-layered perpendicular magnetic recording medium that consisted of the [CoB/Pd]20 film fabricated at 20 °C by adding N2 gas exhibited the highest signal-to-noise ratio in the read-write characteristics.

Original languageEnglish
Pages (from-to)199-203
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Volume287
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2005 Feb

Fingerprint

Sputtering
Magnetic properties
Gases
sputtering
magnetic properties
microstructure
Microstructure
gases
Exchange coupling
Magnetic recording
magnetic recording
Signal to noise ratio
signal to noise ratios
grain size
Heating
heating
Substrates

Keywords

  • Additive N gas
  • CoB/Pd multilayered film
  • Perpendicular magnetic recording medium

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Effect of N2 additive gas during sputtering on magnetic properties and microstructure of CoB/Pd multilayered media. / Asahi, Toru; Tanaka, Mutsumi; Sayama, Junichi; Kawaji, Jun; Matsunuma, Satoshi; Osaka, Tetsuya.

In: Journal of Magnetism and Magnetic Materials, Vol. 287, No. SPEC. ISS., 02.2005, p. 199-203.

Research output: Contribution to journalArticle

Asahi, Toru ; Tanaka, Mutsumi ; Sayama, Junichi ; Kawaji, Jun ; Matsunuma, Satoshi ; Osaka, Tetsuya. / Effect of N2 additive gas during sputtering on magnetic properties and microstructure of CoB/Pd multilayered media. In: Journal of Magnetism and Magnetic Materials. 2005 ; Vol. 287, No. SPEC. ISS. pp. 199-203.
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