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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Hallamasek, K. Boots, M. Souchon, F. Hida, R. Panabiere, M. Albertini, J.-B. Viala, B. |
| Copyright Year | 1965 |
| Abstract | We describe a giant magnetoresistance (GMR) head for helical-scan recording that overcomes the problems of wear, corrosion, and thermal spikes. A flux guide GMR head is built on a very thin silicon structure that is protected by low-wear bearing materials. We describe both the design of the flux guide microstructure that provides a high-bandwidth path for the flux to the GMR spin-valve sensor and the investigation of bearing materials that give low wear rate with acceptable pole tip recession. Avoiding large closure domains gives the flux guide a permeability greater than 1000 for a bandwidth better than 100 MHz. A bearing structure of Al/sub 2/O/sub 3/SiC gives a head life in excess of 5000 h. Tests with a 19-mm data recorder using conventional dual-layer metal particle tape suggest that this GMR head will support a threefold increase over current recording densities and still allow the reproduction of previous generation recordings. |
| Sponsorship | IEEE Magnetics Society |
| Starting Page | 2387 |
| Ending Page | 2389 |
| Page Count | 3 |
| File Size | 773324 |
| 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 heads Giant magnetoresistance Corrosion Silicon Protection Magnetic materials Microstructure Sensor phenomena and characterization Wearable sensors Permeability |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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