Magnetic properties and read/write characteristics of Co-Cr-(Pt,Ta)/ (Cr-Ti,Cr) thin film media : 37th Annual conference on magnetism and magnetic materials
Shiroishi, Y. ; Hosoe, Y. ; Ishikawa, A. ; Yahisa, Y. ; Sugita, Y. ; Suzuki, H. ; Ohno, T. ; Ohura, M.
[S.l.] : American Institute of Physics (AIP)
Published 1993
[S.l.] : American Institute of Physics (AIP)
Published 1993
| ISSN: |
1089-7550
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| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
A Cr-Ti underlayer is found to enhance the in-plane coercive forces of Co-Cr-Pt and Co-Cr-Ta films; the maximum coercive force was 3.5 kOe for (CoCr0.15)0.84Pt0.16/CrTi0.2. The crystallites of Cr-Ti grow in a more highly oriented and uniform manner than ones of Cr, and their lattice spacings are closer to those of Co alloys than Cr, improving the epitaxial growth of Co-alloy crystallites with c-axis in-plane oriented components on the Cr-Ti underlayer. The crystalline anisotropy constant of Co-Cr-Pt with a high Pt concentration is found by torque measurement to be larger than that of Co-Cr-Ta. These can produce extremely high coercive forces in Co-Cr-Pt/Cr-Ti. The C/Co-Cr-Pt/Cr-Ti thin film media with high coercive forces show excellent read/write characteristics; the linear densities at 50% signal drop are very high, 175 and 101 kFCI, for the C/Co-Cr-Pt/Cr-Ti media at head-to-magnetic layer spacings of 0.01 and 0.07 μm.
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| Type of Medium: |
Electronic Resource
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| URL: |