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WEAK LINK FORMATION IN THALLIUM BOORIUM CALCIUM COPPER OXIDE

Award Information

Agency:
National Science Foundation
Branch:
N/A
Award ID:
14254
Program Year/Program:
1991 / SBIR
Agency Tracking Number:
14254
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Advanced Technologies/Laboratories Intl
Advanced Technologies/Lab Intl 20010 Century Blvd, Ste 500 Germantown, MD 20874 0111
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Woman-Owned: Yes
Minority-Owned: Yes
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1991
Title: WEAK LINK FORMATION IN THALLIUM BOORIUM CALCIUM COPPER OXIDE
Agency: NSF
Contract: N/A
Award Amount: $50,000.00
 

Abstract:

THE ELECTRICAL AND MATERIAL PROPERTIES OF HIGH TEMPERATURE SUPERCONDUCTING (HTSC) THIN FILMS HAVE IMPROVED DRAMATICALLYIN RECENT MONTHS. HOWEVER, A FABRICATION PROCESS CAPABLE OFPRODUCING JOSEPHSON JUNCTIONS IN FINITE YIELDS HAS YET TO BEDEVELOPED. SOME DEMONSTRATION DEVICES HAVE BEEN MADE WHICH INDICATE THAT THE 77 K NOISE LEVELS OF DC SQUIDS MADE FROM THALLIUM-BORIUM-CALCIUM-COPPER-OXIDE ARE LOW ENOUGH FOR MANYAPPLICATIONS. UNFORTUNATELY, A BASIC UNDERSTANDING OF THE PROCESSING PROTOCOL NEEDED TO REPRODUCIBLY ACHIEVE SUITABLE I-V CHARACTERISTICS IS LACKING. THE OBJECTIVE OF THIS PHASEI PROGRAM IS TO ESTABLISH THE BASIC PROCESSING TECHNOLOGY REQUIRED FOR RELIABLE WEAK LINK FABRICATION IN TLBACACUO. ANOVEL APPROACH WILL BE INVESTIGATED WHICH TAKES ADVANTAGE OF THE HIGH VOLATILITY OF THALLIUM OXIDE. THE CURRENT-VOLTAGE CHARACTERISTICS OF THE WEAK LINKS WILL BE MEASURED AND OPTIMUM PROCESSING CONDITIONS DEVELOPED. THESERESULTS WILL ESTABLISH THE FEASIBILITY OF REPRODUCIBLY FABRICATING WEAK LINKS IN MICROBRIDGES OF TLBACACUO. THESE RESULTS WILL PROVIDE THE KEY COMPONENT REQUIRED TO FABRICATEACTIVE HTSC DEVICES SUCH AS SQUIDS AND MICROWAVE MIXERS IN THE PHASE II PROGRAM.

Principal Investigator:

Dr. Norihito Hamaguchi
Research Engineer
2033552681

Business Contact:

Small Business Information at Submission:

Advanced Tehcnology Materials
520-b Danbury Road New Milford, CT 06776

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No