Abstract
This paper reports the film and head performance of specular spin valves with nano-oxide layer (NOL-SPSV). A large MR ratio of 17% was obtained by using an ultrathin CoFe free layer with a high conductance Cu layer, which decreases the sense current field of a free layer and brings good soft magnetic characteristics. Prototype heads with a read track width of 0.47-0.61 μm were fabricated by using NOL-SPSV films with an MR ratio of 14-15%, Hua∼400 Oe, and Hc∼5 Oe. High output signal voltage of 8-11 mV/μm was realized in the NOL-SPSV heads.
| Original language | English |
|---|---|
| Pages (from-to) | 208-212 |
| Number of pages | 5 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 235 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - 2001 Oct 1 |
| Event | Proceedings of the 5th Perpendicular Magnetic Recording Conference (PMRC 2000) - Sendai, Japan Duration: 2000 Oct 23 → 2000 Oct 26 |
Keywords
- Free layer
- Head performance
- NOL
- Specular spin valve
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Fukuzawa, H., Koi, K., Tomita, H., Fuke, H. N., Kamiguchi, Y., Iwasaki, H., & Sahashi, M. (2001). NOL specular spin-valve heads using an ultrathin CoFe free layer. Journal of Magnetism and Magnetic Materials, 235(1-3), 208-212. https://doi.org/10.1016/S0304-8853(01)00339-0