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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Dutson, J.D. O'Grady, K. Bin Lu Kubota, Y. Platt, C.L. |
| Copyright Year | 1965 |
| Abstract | We discuss a method for the determination of activation volumes of reversal in perpendicular media. This method does not require correction for the self-demagnetizing field normally associated with these media. This is achieved by performing time dependence measurements at a constant level of magnetization. From the difference in time taken for the magnetization to decay to a fixed value at two fields separated by a small increment /spl Delta/H, the activation volume can be determined. We report data for both CoCrPt alloy films and a multilayer film, typical of those materials under consideration for use as perpendicular media. We find activation volumes that are consistent with the hysteresis curves of the materials. The activation volume scales qualitatively with the exchange coupling. The alloy films have significantly lower activation volumes, implying that they would be capable of supporting a higher data density. |
| Sponsorship | IEEE Magnetics Society |
| Starting Page | 2344 |
| Ending Page | 2346 |
| Page Count | 3 |
| File Size | 252523 |
| File Format | |
| ISSN | 00189464 |
| Volume Number | 39 |
| Issue Number | 5 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-09-01 |
| 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 materials Demagnetization Magnetic field measurement Perpendicular magnetic recording Time measurement Fluctuations Magnetic hysteresis Magnetic separation Saturation magnetization Performance evaluation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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