Magnetic field controlled high-{Tc} thick film microstrip ring resonators
- Univ. of Oulu (Finland)
- Eoetvoes Univ., Budapest (Hungary). Dept. for Low Temperature Physics
The influence of small external magnetic field on microwave properties of superconductor thick film ring resonators has been studied at various cryogenic temperatures. The ring resonators made of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} (YBCO) and Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10+{delta}} (BSCCO) materials were realized by screen printing on yttrium stabilized ZrO{sub 2} (YSZ) and (100) oriented single crystal MgO substrates. External magnetic fields were found to have a strong effect on the microwave reflection of the superconducting ring resonators. Increasing the field first causes the loaded quality factor (Q{sub L}) value to reach a maximum but further increasing the field decreases the Q{sub L} below the zero field value. For example, the maximum change in the quality factor of an YBCO resonator on an YSZ substrate at a resonance frequency of 14,93 GHz was raised to nearly 80,000 by increasing the magnetic flux density from 1.0 to 2.0 mT at a temperature of 50 K. Similarly, the BSCCO ring resonators on MgO substrates were found to be less sensitive; they needed stronger magnetic field changes than the YBCO resonators for the same change in Q{sub L}-value. These magnetic field-controllable microwave resonators may offer (1) a new method to improve the properties of microwave resonators and other microwave devices and (2) a new method to construct new types of devices (e.g. magnetic field sensors of high sensitivity).
- OSTI ID:
- 61241
- Report Number(s):
- CONF-940142-; ISBN 0-8194-1451-4; TRN: IM9526%%22
- Resource Relation:
- Conference: OE/LASE `94: conference on optics, electro-optics, and laser applications in science and engineering, Los Angeles, CA (United States), 22-29 Jan 1994; Other Information: PBD: 1994; Related Information: Is Part Of High {Tc} microwave superconductors and applications. Volume 2156; Hammond, R.B.; Withers, R.S. [eds.]; PB: 235 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
YBa{sub 2}Cu{sub 3}O{sub 7{delta}x} superconducting microstrip filters on dielectric substrate
Microwave properties and characterization of co-evaporated BSCCO thin films
Related Subjects
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
RESONATORS
ENERGY LOSSES
PERFORMANCE
MICROWAVE EQUIPMENT
SUPERCONDUCTING DEVICES
YTTRIUM OXIDES
BARIUM OXIDES
COPPER OXIDES
BISMUTH OXIDES
STRONTIUM OXIDES
CALCIUM OXIDES
FABRICATION
ZIRCONIUM OXIDES
MAGNESIUM OXIDES
MICROWAVE RADIATION
ELECTRICAL PROPERTIES
HIGH-TC SUPERCONDUCTORS
EXPERIMENTAL DATA