High frequency properties of [Co/Pd]n/Py multilayer films under different temperatures
High frequency properties of exchange-coupled multilayers are important to develop future fast switching spintronic devices. Here, we report an experimental investigation of temperature-dependent high frequency properties in [Co/Pd]n/Py multilayer thin films. The results demonstrate that the linewid...
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Veröffentlicht in: | Journal of applied physics 2019-08, Vol.126 (5) |
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Hauptverfasser: | , , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | High frequency properties of exchange-coupled multilayers are important to develop future fast switching spintronic devices. Here, we report an experimental investigation of temperature-dependent high frequency properties in [Co/Pd]n/Py multilayer thin films. The results demonstrate that the linewidth varies with the number of cycles at room temperature. However, the damping slightly decreases with increasing repetitions of Co/Pd. By fitting the relationship between the linewidth and the angle (the out-of-plane azimuthal angle of the external magnetic field), we found that a similar two-magnetron scattering effect becomes stronger when the number of Co/Pd cycles increases. For the (Co/Pd)10/NiFe sample, the linewidth became larger at 9 GHz and 16 GHz with the decrease of temperature. Our findings help comprehend the high frequency properties of exchange-coupled multilayer thin films and are useful for fast switching magnetic devices. |
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ISSN: | 0021-8979 1089-7550 |
DOI: | 10.1063/1.5101003 |