Effects of Alloying Element in Cr-Based Underlayer on Magnetic Properties of Co-Cr-Pt Media

• INABA Nobuyuki

  Central Research Laboratory, Hitachi Ltd.

• FUTAMOTO Masaaki

  Central Research Laboratory, Hitachi Ltd.

Abstract

Magnetic layer thickness dependences of magnetic properties are investigated for Co-Cr-Pt polycrystalline thin films with different Cr-alloy underlayers(Cr-Ti, Cr-W, Cr-Mo, Cr-V, Cr-Mo-V). The specimens with Cr-Ti, Cr-V, and Cr-Mo-V underlayers show higher coercivities by about 30% and lower activation magnetic moments than those with Cr-Mo underlayer. The effective diameter of activation volume increases by 10-20% when the magnetic layer thickness is decreased from 12 to 8nm. Temperature dependences of magnetic properties are also determined and discussed by referring to the data obtained using single crystal magnetic thin films with similar composition.

Journal

• IEICE Trans. Electron.

  IEICE Trans. Electron. 83 (9), 1467-1472, 2000-09-25

  The Institute of Electronics, Information and Communication Engineers

Keywords

• activation volume
• Co-Cr-Pt longitudinal recording medium
• domain wall
• magnetization reversal

Details

• CRID: 1573387452278853248
• NII Article ID: 110003212011
• NII Book ID: AA10826283
• ISSN: 09168524
• Text Lang: en
• Data Source:
  • CiNii Articles