Electrical behavior of a 31-cm, thin-film YBaCuO superconducting microstrip

Electrical time domain measurements and transmission response measurements were made using a 31-cm-long, YBaCuO superconducting thin-film microstrip line and a YBaCuO ground plane, each on separate 1-cm LaGaO3 substrates, with a 125-μm sapphire substrate serving as the dielectric insulator. Degradat...

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Bibliographic Details
Published in:Journal of applied physics 1989-11, Vol.66 (10), p.5066-5071
Main Authors: HORNAK, L. A, HATAMIAN, M, TEWKSBURY, S. K, BURKHARDT, E. G, HOWARD, R. E, MANKIEWICH, P. M, STRAUGHN, B. L, BRANDLE, C. D
Format: Article
Language:English
Subjects:
360204 - Ceramics, Cermets, & Refractories- Physical Properties
426001 - Engineering- Superconducting Devices & Circuits- (1990-)
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER COMPOUNDS
COPPER OXIDES
CORUNDUM
CRITICAL CURRENT
CURRENTS
DIELECTRIC MATERIALS
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
MAGNETIC FIELDS
MATERIALS
MATERIALS SCIENCE
MICROWAVE EQUIPMENT
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
RADIOWAVE RADIATION
SAPPHIRE
SUPERCONDUCTING FILMS
TRANSITION ELEMENT COMPOUNDS
TRANSMISSION
WAVEGUIDES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
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Summary:Electrical time domain measurements and transmission response measurements were made using a 31-cm-long, YBaCuO superconducting thin-film microstrip line and a YBaCuO ground plane, each on separate 1-cm LaGaO3 substrates, with a 125-μm sapphire substrate serving as the dielectric insulator. Degradation of the performance of the line for currents up to the critical-current density and for magnetic fields moderately above the lower critical magnetic field HC1 were evaluated in a variety of simple measurements. In addition, an evaluation of an optically switched segment of a superconducting microstrip line on a zirconia substrate is described. Direct evaluations of pulse distortion are not possible for these long serpentine lines on small substrates due to electromagnetic coupling between adjacent line segments. However, this coupling gives rise to distinctive transmission responses which may aid the evaluation of line performance.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.343782