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NBN TUNNEL JUNCTIONS WITH THERMALLY OXIDIZED SPUTTER
- Small Business Information
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Woman-Owned: NoMinority-Owned: NoHUBZone-Owned: No
- Phase 1
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Fiscal Year: 1991Title: NBN TUNNEL JUNCTIONS WITH THERMALLY OXIDIZED SPUTTERAgency / Branch: DOD / MDAContract: N/AAward Amount: $49,849.00
Abstract:
THERE HAS BEEN CONSIDERABLE INTEREST IN RECENT YEARS IN FABRICATION OF ALL NIOBIUM NITRIDE SUPERCONDUCTING CIRCUITS. THE HIGH TRANSITION TEMPERATURE OF NBN IS TECHNOLOGICALLY IMPORTANT BECAUSE IT ALLOWS NBN-BASED CIRCUITS TO BE COOLED WITH SMALL AND RELIABLE CLOSED CYCLE REFRIGERATORS (CCR). WE HAVE DEMONSTRATED THE FEASIBILITY OF OPERATING NBN-BASED JOSEPHSON CIRCUITRY IN A CCR ENVIRONMENT. THE FABRICATION OF SUCH CIRCUITS RELIES ON THE DEVELOPMENT OF A PROCESS THAT RELIABLY PRODUCES JOSEPHSON TUNNEL JUNCTIONS. WE HAVE DEVELOPED A PROCESS CAPABLE OF PRODUCING HIGH QUALITY NBN/MGO/NBN DEVICES. OUR PROCESS EXPLOITS THERMALLY OXIDIZED SPUTTER-DEPOSITED MAGNESIUM AS A TUNNEL BARRIER AND PROVIDED A RELATIVELY REPRODUCIBLE MEANS FOR TUNNEL BARRIER FORMATION. HOWEVER, A MAJOR PROBLEM WITH SPUTTER-DEPOSITED MG IS THE PRESENCE OF EXCESSIVE UNOXIDIZED MAGNESIUM. THIS EXCESS MG REACTS WITH NIOBIUM NITRIDE ELECTRODES AND FORMS POOR INTERFACES. USE OF A DIFFUSSION BARRIER BETWEEN NIOBIUM NITRIDE AND MAGNESIUM SHOULD ALLEVIATE THIS PROBLEM. THE GOAL OF THIS RESEARCH IS TO IDENTIFY A SUITABLE DIFFUSION BARRIER.Small Business Information at Submission:Principal Investigator:
Masoud Radparvar
Principal Investigator
9145921190Business Contact:
Hypres Inc
175 Clearbrook Road Elmsford, NY 10523EIN/Tax ID:DUNS: N/ANumber of Employees: N/AWoman-Owned: NoMinority-Owned: NoHUBZone-Owned: No
Award Information
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Agency: Department of Defense |
Branch: Missile Defense Agency |
Award ID: 15643 |
Program Year/Program: 1991 / SBIR |
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Agency Tracking Number: 15643 |
Solicitation Year: N/A |
Solicitation Topic Code: N/A |
Solicitation Number: N/A |