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Microstrip resonators using two-sided metalorganic chemical vapor deposited Er-Ba-Cu-O thin films

Journal Article · · Applied Physics Letters; (USA)
DOI:https://doi.org/10.1063/1.104387· OSTI ID:6253946
; ; ; ; ; ;  [1]
  1. TRW Space and Technology Group, One Space Park, Redondo Beach, California 90278 (US)
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We have measured very low microwave losses in microstrip resonators produced in a newly developed process which deposits high-temperature Er-Ba-Cu-O superconducting films by metalorganic chemical vapor deposition on both sides of a LaAlO{sub 3} substrate. These {ital in} {ital situ} films have critical temperatures of 92 K. High {ital T}{sub {ital c}} superconductor (HTS) linear microstrip resonators demonstrated {ital Q}'s of 3500 at 10 GHz and 4.2 K, corresponding to surface resistances less than 330 {mu}{Omega}, which is 45 times better than measured silver resoantors. HTS meanderline resonators with a fundamental frequency of 1.3 GHz have {ital Q}'s of 9600 at 4.2 K. Identical silver meanderline circuits have 300 times more surface resistance than HTS circuits.

OSTI ID:
6253946
Journal Information:
Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 58:10; ISSN APPLA; ISSN 0003-6951
Country of Publication:
United States
Language:
English

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Related Subjects

426001* -- Engineering-- Superconducting Devices & Circuits-- (1990-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
AMPLIFIERS
BARIUM COMPOUNDS
BARIUM OXIDES
CAVITY RESONATORS
CHALCOGENIDES
CHEMICAL COATING
CHEMICAL VAPOR DEPOSITION
COPPER COMPOUNDS
COPPER OXIDES
DEPOSITION
ELECTRONIC EQUIPMENT
EQUIPMENT
ERBIUM COMPOUNDS
ERBIUM OXIDES
FABRICATION
FILMS
HIGH-TC SUPERCONDUCTORS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
RARE EARTH COMPOUNDS
RESONATORS
SUPERCONDUCTING FILMS
SUPERCONDUCTORS
SURFACE COATING
TRANSITION ELEMENT COMPOUNDS