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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Chen, E.Y. Pohm, A.V. Daughton, J.M. Brown, J. Black, W.C. |
| Copyright Year | 1965 |
| Abstract | Multiple, high sensitivity, GMR read head sensors were made and experimentally evaluated. The sensors were 1 micron wide and 10 microns long with flux gathering tips that expanded to 1.5, 2.0, and 3.0 microns. The sensors were found to have saturated outputs of 1.6 mV per micron of length for sense currents of 2.5 mA. The sensors had a very high sensitivity of 0.7% change in resistance per Oe of signal field because of the low effective anisotropy of the sensor material. Tests were performed in a uniform field at a frequency of 5 kHz on sensors without shields. Fields of /spl plusmn/4 Oe were sufficient to provide excitation over the full linear range. The experimental GMR material had a M-R coefficient of 6% and an anisotropy field of 5 Oe along the long axis of the sensor. The non-uniform ternary magnetic layers were 55 A/sup O/ thick and the copper middle layers were 25 to 30 A/sup O/ thick.< |
| Sponsorship | IEEE Magnetics Society |
| Starting Page | 3816 |
| Ending Page | 3818 |
| Page Count | 3 |
| File Size | 285647 |
| File Format | |
| ISSN | 00189464 |
| Volume Number | 30 |
| Issue Number | 6 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1994-11-01 |
| 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 heads Anisotropic magnetoresistance Magnetic sensors Testing Performance evaluation Frequency Magnetic materials Magnetic anisotropy Perpendicular magnetic anisotropy Magnetic flux |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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