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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Taffary, T. Autissier, D. Boust, F. Pascard, H. |
| Copyright Year | 1965 |
| Abstract | The influence of magnetic state (saturated or unsaturated states) on the ferromagnetic resonance damping in relaxing rare earth substituted Y/sub 1-x/RE/sub x/Gd/sub 2/Fe/sub 5/O/sub 12/ garnets (with RE=Dy Ho, Tb and x=0;0.15;0.3;0.6) has been studied. The damping parameter a, as defined by Landau-Lifshitz equation, has been determined either by FMR at 10 GHz (/spl alpha//sub sat/ for saturated state) or by measurement of the frequency dependence of the complex initial permeability in the 0.1 GHz-10 GHz band (/spl alpha//sub unsat/ for unsaturated state). In the saturated state the introduction of relaxing rare earth is found to increase significantly /spl alpha//sub sat/ values by more than one order of magnitude. On the contrary, although /spl alpha//sub unsat/ values also increase with rare earth concentration they stay in the same order of magnitude. It appears that /spl alpha//sub unsat/ is controlled either by the magnetic disorder introduced via the domain and domain wall structure or by the rare earth concentration. |
| Sponsorship | IEEE Magnetics Society |
| Starting Page | 1384 |
| Ending Page | 1386 |
| Page Count | 3 |
| File Size | 405001 |
| File Format | |
| ISSN | 00189464 |
| Volume Number | 34 |
| Issue Number | 4 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1998-07-01 |
| 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 resonance Damping Garnets Saturation magnetization Magnetic domain walls Iron Equations Frequency measurement Permeability measurement Frequency dependence |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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