Spectroscopy of the spin waves of a synthetic antiferromagnet grown on a piezoelectric substrate
Fuente:
arXiv
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866912134710951936 |
|---|---|
| author | Thiancourt, G. Y. Ngom, S. M. Bardou, N. Devolder, T. |
| author_facet | Thiancourt, G. Y. Ngom, S. M. Bardou, N. Devolder, T. |
| contents | Efficient coupling between magnons and phonons requires material platforms that contain magnetic multilayers with versatile high-frequency properties grown on piezoelectric substrates with large electromechanical coupling coefficients. One of these systems is the CoFeB/Ru/CoFeB Synthetic antiferromagnet grown on Lithium Niobate substrate. We investigate its microwave magnetic properties using a combination of ferromagnetic resonance and propagating spin wave spectroscopy, from which we extract the dispersion relation of the acoustic branch of spin waves. The frequency and the linewidth of this spin wave resonance, its field dependence and its dispersion relation indicate that the magnetic properties are as good as when grown on standard non-piezoelectric substrates, as well as being in line with theory. This new material platform opens opportunities to extend microwave acousto-magnonics beyond the use of single layer magnets. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_18202 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Spectroscopy of the spin waves of a synthetic antiferromagnet grown on a piezoelectric substrate Thiancourt, G. Y. Ngom, S. M. Bardou, N. Devolder, T. Materials Science Efficient coupling between magnons and phonons requires material platforms that contain magnetic multilayers with versatile high-frequency properties grown on piezoelectric substrates with large electromechanical coupling coefficients. One of these systems is the CoFeB/Ru/CoFeB Synthetic antiferromagnet grown on Lithium Niobate substrate. We investigate its microwave magnetic properties using a combination of ferromagnetic resonance and propagating spin wave spectroscopy, from which we extract the dispersion relation of the acoustic branch of spin waves. The frequency and the linewidth of this spin wave resonance, its field dependence and its dispersion relation indicate that the magnetic properties are as good as when grown on standard non-piezoelectric substrates, as well as being in line with theory. This new material platform opens opportunities to extend microwave acousto-magnonics beyond the use of single layer magnets. |
| title | Spectroscopy of the spin waves of a synthetic antiferromagnet grown on a piezoelectric substrate |
| topic | Materials Science |
| url | https://arxiv.org/abs/2411.18202 |