Abstract
The propagation of spin waves in single and multilayered ferromagnetic Co-Ta-Zr films is experimentally investigated in this work. Two microstrip antennas placed on top of the magnetic core are used for signal transmission and reception. A metallic ground layer placed on one side of the magnetic film leads to nonreciprocal spin wave dispersion, resulting in a direction-dependent coupling of the antennas. Compared to previous experiments with Ni-Fe films, the higher resistivity of the Co-Ta-Zr reduces the energy dissipation in the device and allows for the incorporation of a thicker magnetic film, thereby increasing the nonreciprocity and the spin wave propagation frequency range. In the case of the Co-Ta-Zr/SiO2 multilayer, the spin wave-mediated coupling of the antennas is strongly dependent on the relative orientation of the magnetizations in the individual layers, and on the application of an external magnetic field.
Original language | English (US) |
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Article number | 5257122 |
Pages (from-to) | 4215-4218 |
Number of pages | 4 |
Journal | Ieee Transactions on Magnetics |
Volume | 45 |
Issue number | 10 |
DOIs | |
State | Published - Oct 2009 |
Funding
The authors would like to thank the staff of the Delft Institute of Microsystems and Nanoelectronics (DIMES), in particular H. Schellevis and A. Akhnoukh, as well as Prof. J. N. Burghartz of the Institute for Microelectronics Stuttgart (IMS CHIPS) and Prof. K. L. Wang of UCLA, for their support. This work was supported by the technology foundation STW of the Netherlands, and by the Nanoelectronics Research Initiative (NRI) through the Western Institute of Nanoelectronics (WIN).
Keywords
- Magnetic microwave devices
- Magnetic multilayers
- Nonreciprocal devices
- Soft magnetic films
- Spin waves
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering