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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Kawada, Y. Ueno, Y. Shibata, K. |
| Copyright Year | 1965 |
| Abstract | It was found that Co-Pt multilayer films had high perpendicular magnetic anisotropy when the thickness of the Co layer was greater than that of Pt. Hc increased with decreasing Pt layer thickness and had a maximum at 0.13 nm for samples of Pt underlayer/[Co(0.44 nm)/Pt(0 /spl sim/ 1.2 nm)]/sub 20/ deposited by sputtering at 4 Pa Ar gas pressure. K/sub /spl perp// also increased with decreasing Pt layer thickness, 3 /spl times/ 10/sup 6/ to 10 /spl times/ 10/sup 6/ erg/cm/sup 3/. Hc increased with Co-Pt multilayer deposition Ar gas pressure, and /spl alpha/(dM/dH/sub at/ /sub Hc/) decreased with Pt underlayer deposition Ar gas pressure. By increasing deposition pressures of Co-Pt multilayers and Pt underlayer to 7.5 Pa, the characteristics of Hc: 4.7 kOe, S: 0.96, /spl alpha/: 4, and K/sub /spl perp//: 10 /spl times/ 10/sup 6/ erg/cm/sup 3/ were obtained. By inserting FeTaC soft magnetic layers between the glass substrate and Pt underlayer, Hc: 5.8 kOe, S: 0.87, and /spl alpha/: 1.8 were obtained. These characteristics imply that Co-Pt multilayers with thin Pt layers have potential for perpendicular magnetic recording media at high recording density because of the high K/sub /spl perp// and thin recording layer (less than 10 nm). |
| Sponsorship | IEEE Magnetics Society |
| Starting Page | 2045 |
| Ending Page | 2047 |
| Page Count | 3 |
| File Size | 236067 |
| File Format | |
| ISSN | 00189464 |
| Volume Number | 38 |
| Issue Number | 5 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2002-09-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Magnetic multilayers Perpendicular magnetic recording Anisotropic magnetoresistance Argon Magnetic films Perpendicular magnetic anisotropy Sputtering Nonhomogeneous media Soft magnetic materials Glass |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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