Abstract
The unloaded quality factor of the cavity resonator is the ratio between the stored energy of the cavity resonator to the power loses in the cavity resonator. The homemade rectangular cavity resonator in X-band shows higher unloaded quality factor compare with standard cavity resonator in the TE 102 mode. Because the inner walls of rectangular cavity resonator are treated through high quality polishing and high purity Au plating. Also the inner walls are made by printed circuit board which has thin Cu foil, two problems such as mechanical vibration and thermal expansion can be solved by minimizing unwanted eddy current. Through the ferromagnetic resonance measurement by using our rectangular cavity resonator, we can be obtained reasonable values of resonance frequency and linewidth by using NiFe thin film. As a result, the Gilbert damping constant from the experimental result is in good agreement with the typical value of damping parameter of the NiFe thin film.
| Original language | English |
|---|---|
| Pages (from-to) | 1021-1024 |
| Number of pages | 4 |
| Journal | Current Applied Physics |
| Volume | 13 |
| Issue number | 6 |
| DOIs | |
| State | Published - Aug 2013 |
Bibliographical note
Funding Information:This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MEST) ( 2011-0027908 ), and KBSI Grant T33517 for Seung-young Park. Additional support was provided by the NRF funds (Grant Nos. 2010-0023798 and 2010-0022040 , Nuclear R&D Program of the MEST of Korea).
Keywords
- Damping constant
- Ferromagnetic resonance (FMR)
- Rectangular cavity resonator