High Density Perpendicular Magnetic Recording Media of Granular-type FePt/MgO/Fe-Ta-C double-layers

• Zhang Zhengang

  Information Storage Materials Laboratory, Toyota Technological Institute

• Yin Jinhua

  Information Storage Materials Laboratory, Toyota Technological Institute

• Amarendra K. Singh

  Information Storage Materials Laboratory, Toyota Technological Institute

• Perumal A.

  Information Storage Materials Laboratory, Toyota Technological Institute

• Suzuki Takao

  Information Storage Materials Laboratory, Toyota Technological Institute

• Osawa Hiroshi

  Showa Denko HD KK

Abstract

Granular-type FePt films with perpendicular magnetic anisotropy are obtained on top of Fe-Ta-C magnetic soft underlayer by annealing FePt/MgO multilayers. For high-density perpendicular magnetic recording medium application, the issues regarding the FePt film crystallographic texture, microstructure, chemical ordering and magnetic properties are addressed in this paper. Based on this medium design, double-layered FePt disks are fabricated on 2.5-inch glass discs. The magnetic recordin performances of these disks are evaluated by a spin-stand. The results reveal a close correlation between the disks SN_mR recording performance with the initial multilayer structure.

Journal

• Transactions of the Magnetics Society of Japan

  Transactions of the Magnetics Society of Japan 4 (4-2), 194-199, 2004

  The Magnetics Society of Japan

Keywords

• FePt films
• grain size
• perpendicular recording media
• (001)-texture
• chemical ordering

Details

• CRID: 1390282680198333952
• NII Article ID: 110002666111
• NII Book ID: AA1158094X
• DOI: 10.3379/tmjpn2001.4.194
• ISSN: 18846726
• ISSN: 13467948
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed