Measurements of the RF surface resistance of high-Tc superconductors
Abstract
An experimental program is being conducted to assess the applicability of high-(Tc) superconductors for use in high power RF and microwave devices. The program involves the measurement of the RF surface resistance of high-(Tc) samples at frequencies between 0.15 and 40 GHz and RF surface magnetic fields as high as 640 gauss. Polycrystalline samples were found to have surface resistances which increase monotonically with RF-field amplitude, saturating at high field at a few percent of the normal-state surface resistance just above (Tc).
- Publication:
-
Astrophysical Processes and Structures in the Universe
- Pub Date:
- September 1990
- Bibcode:
- 1990apsu.confR..24D
- Keywords:
-
- Magnetic Fields;
- Microwave Equipment;
- Polycrystals;
- Radio Frequencies;
- Superconductors;
- Surface Properties;
- Amplitudes;
- Critical Temperature;
- Silver;
- Substrates;
- Solid-State Physics