Title :
Lower order modes of YBCO/STO/YBCO circular disk resonators
Author :
Gevorgian, Spartak ; Carlsson, Erik ; Linnér, Peter ; Kollberg, Erik ; Vendik, Orest ; Wikborg, Erland
Author_Institution :
Dept. of Microwave Technol., Chalmers Univ. of Technol., Goteborg, Sweden
fDate :
10/1/1996 12:00:00 AM
Abstract :
Lower order modes in a single crystal strontium titanate (STO) circular disk resonator are studied experimentally. Superconducting epitaxial YBCO films form the parallel-plates of the resonator. Due to the extremely high dielectric constant of STO, the electric fields are concentrated between the plates, while there is a substantial magnetic fringing field which affects both the resonant frequencies, Q-factors, and tunability of all modes, especially the TM110 and TM210
Keywords :
Q-factor; barium compounds; high-temperature superconductors; permittivity; strontium compounds; superconducting epitaxial layers; superconducting resonators; superconducting thin films; yttrium compounds; Q-factors; TM110 mode; TM210 mode; YBaCuO-SrTiO3-YBaCuO; circular disk resonators; dielectric constant; electric fields; magnetic fringing field; mode tunability; parallel-plate resonator; resonant frequencies; High-K gate dielectrics; Magnetic films; Magnetic resonance; Resonant frequency; Strontium; Superconducting epitaxial layers; Superconducting films; Superconducting magnets; Titanium compounds; Yttrium barium copper oxide;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
