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NBN TUNNEL JUNCTIONS WITH THERMALLY OXIDIZED SPUTTER

Award Information

Agency:
Department of Defense
Branch:
Missile Defense Agency
Award ID:
15643
Program Year/Program:
1991 / SBIR
Agency Tracking Number:
15643
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
HYPRES, Inc.
175 Clearbrook Road Elmsford, NY -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1991
Title: NBN TUNNEL JUNCTIONS WITH THERMALLY OXIDIZED SPUTTER
Agency / Branch: DOD / MDA
Contract: N/A
Award 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.

Principal Investigator:

Masoud Radparvar
Principal Investigator
9145921190

Business Contact:

Small Business Information at Submission:

Hypres Inc
175 Clearbrook Road Elmsford, NY 10523

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