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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Seyama, Y. Tanaka, A. Oshiki, M. |
| Copyright Year | 1965 |
| Abstract | The MR ratio of multilayer GMR sensors with the CPP (current perpendicular to the plane) structure is expected to be much larger than that of CIP (current in the plane) sensors. We investigated the GMR properties of CIP and CPP elements of a Co/sub 0.9/Fe/sub 0.1//Cu 10-bilayer. For CPP elements, the GMR film was connected to the top and bottom terminal layers with a micron-sized contact hole. The measured data was analyzed using a model taking into account of the distribution of sense current. The measured resistance change (l R) increased rapidly as the GMR diameter became smaller, and showed close agreement with the calculated results when we assumed the MR ratio of CPP films to be around 30%. This MR ratio was twice as large as that of the CIP film of Co/sub 0.9/Fe/sub 0.1//Cu 10-bilayer. In this study, we used the CPP elements which had wide GMR films and fine contact holes. So, the measured saturation field (/sub H/s) of the CPP elements was almost constant as a function of the contact hole dimension, because the demagnetization field was insensitive to the sensor size. The CPP element in this study will obtain a high output when the GMR diameter becomes small. |
| Sponsorship | IEEE Magnetics Society |
| Starting Page | 2838 |
| Ending Page | 2840 |
| Page Count | 3 |
| File Size | 455695 |
| File Format | |
| ISSN | 00189464 |
| Volume Number | 35 |
| Issue Number | 5 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1999-09-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Giant magnetoresistance Magnetic properties Magnetic multilayers Magnetic sensors Iron Electrical resistance measurement Current measurement Data analysis Magnetic field measurement Size measurement |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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