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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Jiang, J.S. Fullerton, E.E. Sowers, C.H. Inomata, A. Bader, S.D. Shapiro, A.J. Shull, R.D. Gornakov, V.S. Nikitenko, V.I. |
| Copyright Year | 1965 |
| Abstract | The properties of exchange-spring-coupled bilayer and superlattice films are highlighted for Sm-Co hard magnet (nominally Sm/sub 2/Co/sub 7/) and Fe or Co soft magnet layers. The hexagonal Sm-Co is grown via magnetron sputtering in a- and b-axis epitaxial orientations. In both cases the c-axis, in the film plane, is the easy axis of magnetization. Trends in coercivity with film thickness are established and related to the respective microstructures of the two orientations. The magnetization reversal process for the bilayers is examined by magnetometry and magneto-optical imaging, as well as by simulations that utilize a one-dimensional model to provide the spin configuration for each atomic layer. The Fe magnetization is pinned to that of the Sm-Co at the interface, and reversal proceeds via a progressive twisting of the Fe magnetization. The Fe demagnetization curves are reversible as expected for a spring magnet. Comparison of experiment and simulations indicates that the spring magnet behavior can be understood from the intrinsic properties of the hard and soft layers. Estimates are made of the ultimate gain in performance that can potentially be realized in this system. |
| Sponsorship | IEEE Magnetics Society |
| Starting Page | 3229 |
| Ending Page | 3234 |
| Page Count | 6 |
| File Size | 578061 |
| 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 | Springs Soft magnetic materials Iron Magnetic properties Magnetic superlattices Sputtering Coercive force Microstructure Magnetization reversal Atomic layer deposition |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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