Tunable exchange-bias-like effect in bi-substituted Gadolinium iron garnet film
- Using magneto-optical Faraday and Kerr measurements, we investigate the magnetic and magnetooptical properties of a thick Bi-substituted gadolinium iron garnet film over a broad range of wavelengths (250-850 nm) and temperatures (150-300 K), including the magnetization compensation point, TM. We observe an exchange-bias-like effect in the vicinity of TM. By slightly changing the sample temperature, we can precisely tune the bias field, which reaches a magnitude 6 times higher than the coercive field. We explain this phenomenon by considering the short-range superexchange interaction and a change in the magnetic behavior when moving from the surface to the bulk of the film. This finding may lead to the development of single-film magneto-optical devices based on the exchange-bias effect.
| Author details: | Marwan DebORCiD, Pierre Molho, Bernard BarbaraGND |
|---|---|
| DOI: | https://doi.org/10.1103/PhysRevApplied.15.054064 |
| ISSN: | 2331-7019 |
| Title of parent work (English): | Physical review applied |
| Publisher: | American Physical Society |
| Place of publishing: | College Park |
| Publication type: | Article |
| Language: | English |
| Date of first publication: | 2021/05/27 |
| Publication year: | 2021 |
| Release date: | 2024/02/21 |
| Volume: | 15 |
| Issue: | 5 |
| Article number: | 054064 |
| Number of pages: | 7 |
| Funding institution: | Alexander von Humboldt Foundation |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Peer review: | Referiert |
