Effect of palladium nuclei insertion by electroless deposition on magnetic intergranular isolation and read/write characteristics in SmCo 5 perpendicular magnetic recording media

Atsushi Sugiyama, Yuko Egawa, Isao Koizumi, Masahiro Yoshino, Jiro Hokkyo, Toru Asahi, Takanori Kiya, Jun Ariake, Kazuhiro Ouchi, Tetsuya Osaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In order to improve the magnetic intergranular isolation between the magnetic grains in the SmCo 5 perpendicular magnetic recording media, the palladium nuclei deposited by an electrochemical process were introduced into a sputter deposition process of the SmCo 5 film. A few nanometer size Pd nuclei were electrochemically deposited on the sputtered Cu underlayer by a displacement deposition (chemical plating). The sizes of Pd nuclei were controlled by adjusting the Pd ion concentration in electrolyte solutions. The magnetic domain size in Sm-Co layer deposited on Pd nuclei / Cu / Ti underlayer became smaller and the magnetization reversal process was changed from the wall motion to the coherent rotation. Moreover, the read/write characteristics were improved at higher linear recording densities.

Original languageEnglish
Title of host publicationPhysics Procedia
Pages68-74
Number of pages7
Volume16
DOIs
Publication statusPublished - 2011
Event9th Perpendicular Magnetic Recording Conference, PMRC 2010 - Sendai, Japan
Duration: 2011 May 172011 May 19

Other

Other9th Perpendicular Magnetic Recording Conference, PMRC 2010
CountryJapan
CitySendai
Period11/5/1711/5/19

Fingerprint

electroless deposition
magnetic recording
palladium
insertion
isolation
nuclei
magnetic domains
ion concentration
plating
adjusting
recording
electrolytes
magnetization

Keywords

  • Electroless deposition
  • High K
  • Perpendicular magnetic recording
  • Read/write(R/W) characteristics
  • SmCo thin film

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Effect of palladium nuclei insertion by electroless deposition on magnetic intergranular isolation and read/write characteristics in SmCo 5 perpendicular magnetic recording media . / Sugiyama, Atsushi; Egawa, Yuko; Koizumi, Isao; Yoshino, Masahiro; Hokkyo, Jiro; Asahi, Toru; Kiya, Takanori; Ariake, Jun; Ouchi, Kazuhiro; Osaka, Tetsuya.

Physics Procedia. Vol. 16 2011. p. 68-74.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Sugiyama, A, Egawa, Y, Koizumi, I, Yoshino, M, Hokkyo, J, Asahi, T, Kiya, T, Ariake, J, Ouchi, K & Osaka, T 2011, Effect of palladium nuclei insertion by electroless deposition on magnetic intergranular isolation and read/write characteristics in SmCo 5 perpendicular magnetic recording media in Physics Procedia. vol. 16, pp. 68-74, 9th Perpendicular Magnetic Recording Conference, PMRC 2010, Sendai, Japan, 11/5/17. https://doi.org/10.1016/j.phpro.2011.06.110
Sugiyama, Atsushi ; Egawa, Yuko ; Koizumi, Isao ; Yoshino, Masahiro ; Hokkyo, Jiro ; Asahi, Toru ; Kiya, Takanori ; Ariake, Jun ; Ouchi, Kazuhiro ; Osaka, Tetsuya. / Effect of palladium nuclei insertion by electroless deposition on magnetic intergranular isolation and read/write characteristics in SmCo 5 perpendicular magnetic recording media Physics Procedia. Vol. 16 2011. pp. 68-74
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AU - Yoshino, Masahiro

AU - Hokkyo, Jiro

AU - Asahi, Toru

AU - Kiya, Takanori

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AU - Ouchi, Kazuhiro

AU - Osaka, Tetsuya

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