دورية أكاديمية
An apparatus and methodology for high-power SQUID-detected ferromagnetic resonance measurements
| العنوان: | An apparatus and methodology for high-power SQUID-detected ferromagnetic resonance measurements |
|---|---|
| المؤلفون: | J. M. O’Reilly, P. Stamenov |
| المصدر: | AIP Advances, Vol 9, Iss 3, Pp 035152-035152-5 (2019) |
| بيانات النشر: | AIP Publishing LLC |
| سنة النشر: | 2019 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | Physics, QC1-999 |
| الوصف: | Historically, ferromagnetic resonance has been dominated by inductive techniques, for the best part of the last 80 years. It has been only in the last 20 years that non-inductive techniques, such as Ferromagnetic Resonance Force Microscopy (FMRFM) and Magneto-optical Kerr Effect (MOKE), have been used to study, for example, the spatial distribution of resonance modes. Neither of these techniques is absolute - i.e. provides information on the amplitude of excitation as a function of absorbed microwave power. Here we extend on the recent demonstration of SQUID-detected FMR [J. M. O’Reilly and P. Stamenov, Rev. Sci. Instrum. 89, 044701 (2018)], of absolute scalar resonance measurements in single-crystalline and poly-crystalline YIG, at various fields and temperatures, by introducing a new set-up, where the microwave power, instead of being sunk in a matched load at the cryogenic end of the measurement probe is brought back to the ambient environment and is both metered and sunk in high dissipation power (>50 W @ 50 Ω) matching load. The here suggested methodology allows for the absolute excitation amplitude of modes excited during high-power operation of critical microwave devices, such as filters and Y-junction stripline circulators, to be predicted based on direct measurements of the same material in a known geometry. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2158-3226 |
| العلاقة: | http://dx.doi.org/10.1063/1.5080078Test; https://doaj.org/toc/2158-3226Test; https://doaj.org/article/96d382cdd79b451b99fd8a7021c559aaTest |
| DOI: | 10.1063/1.5080078 |
| الإتاحة: | https://doi.org/10.1063/1.5080078Test https://doaj.org/article/96d382cdd79b451b99fd8a7021c559aaTest |
| رقم الانضمام: | edsbas.9229265 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 21583226 |
|---|---|
| DOI: | 10.1063/1.5080078 |