1. Microwave cavity tuned with liquid metal and its application to Electron Paramagnetic Resonance
- Author
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Gallo, C. S., Berto, E., Braggio, C., Calaon, F., Carugno, G., Crescini, N., Ortolan, A., Ruoso, G., and Tessaro, M.
- Subjects
Physics - Instrumentation and Detectors ,Physics - Applied Physics - Abstract
This note presents a method to tune the resonant frequency $f_{0}$ of a rectangular microwave cavity. This is achieved using a liquid metal, GaInSn, to decrease the volume of the cavity. It is possible to shift $f_{0}$ by filling the cavity with this alloy, in order to reduce the relative distance between the internal walls. The resulting modes have resonant frequencies in the range $7\div8\,$GHz. The capability of the system of producing an Electron Paramagnetic Resonance (EPR) measurement has been tested by placing a 1 mm diameter Yttrium Iron Garnet (YIG) sphere inside the cavity, and producing a strong coupling between the cavity resonance and Kittel mode. This work shows the possibility to tune a resonant system in the GHz range, which can be useful for several applications., Comment: 7 Pages, 5 Figures
- Published
- 2018