Academic Journal
NiFe/CoFe/Cu/CoFe/MnIr spin valves studied by ferromagnetic resonance
| العنوان: | NiFe/CoFe/Cu/CoFe/MnIr spin valves studied by ferromagnetic resonance |
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| المؤلفون: | Timopheev, A. A., Sobolev, N. A., Pogorelov, Y. G., Bunyaev, S. A., Teixeira, J. M., Cardoso, S., Freitas, P. P., Kakazei, G. N. |
| المصدر: | Journal of Applied Physics ; volume 113, issue 17 ; ISSN 0021-8979 1089-7550 |
| بيانات النشر: | AIP Publishing |
| سنة النشر: | 2013 |
| الوصف: | Ion-beam deposited (Glass/Ta/NiFe/CoFe/Cu/CoFe/MnIr/Ta) spin valves (SVs) with a Cu-spacer thickness (tCu) varying from 14 to 28 Å have been studied by ferromagnetic resonance (FMR) and magnetoresistance (MR) measurements. With respect to the interlayer coupling strength between the free and fixed ferromagnetic layers, the samples have been divided in those with a weak coupling (for tCu > 16 Å) and a strong coupling regimes (for tCu ≤ 16 Å). The FMR behavior in these two regimes is quite different. For the weakly coupled series, there are two well-defined FMR peaks stemming from the free and fixed layers. Their in-plane angular dependences exhibit 180° and 360° symmetries, respectively. For the strongly coupled SVs, the resonance modes are hybridized and possess features of both layers simultaneously. The main coupling mechanism between the two layers, as concluded from the FMR and MR measurements, is the Néel “orange-peel” magnetostatic interaction, accompanied by a direct exchange due to pinholes in the Cu spacer for tCu < 17 Å. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1063/1.4798615 |
| DOI: | 10.1063/1.4798615/7907642/17d713_1_online.pdf |
| الاتاحة: | http://dx.doi.org/10.1063/1.4798615 https://pubs.aip.org/aip/jap/article-pdf/doi/10.1063/1.4798615/7907642/17d713_1_online.pdf |
| رقم الانضمام: | edsbas.77B00A35 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1063/1.4798615 |
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