INCREASING CRITICAL CURRENT DENSITIES IN HIGH-TC SUPERCONDUCTORS

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$50,000.00
Award Year:
1990
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
11938
Agency Tracking Number:
11938
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
P.o. Box 5, Lexington, MA, 02173
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
J. Paul Pemsler
President
(617) 933-5634
Business Contact:
J. PAUL PEMSLER
PRESIDENT
(617) 933-5634
Research Institute:
n/a
Abstract
RECENT ADVANCES IN HIGH TEMPERATURE SUPERCONDUCTIVITY BROUGHT A NEW EXCITEMENT TO PHYSICAL SCIENTISTS THROUGHOUT THE WORLD. THIS EXCITEMENT HAS BEEN TEMPERED BY THE REALIZATION THAT DIFFICULT PROBLEMS NEED TO BE SOLVED BEFOREEXTENSIVE PRACTICAL USE CAN BE MADE OF THESE REVOLUTIONARY DISCOVERIES. FOREMOST AMONG THESE PROBLEMS, AND THE ONE WHICH IS ADDRESSED IN THIS PROPOSAL, IS THE ABILITY TO ACHIEVE ADEQUATE CURRENT DENSITIES IN MODERATE MAGNETIC FIELDS IN THE HIGH-T MATERIALS. THE MAJOR SOURCE OF THE "WEAK LINK" BEHAVIOR IN POLYCRYSTALLINE MATERIALS IS POOR INTER-GRAIN CONTACTS. WE SEEK TO LARGELY ELIMINATE THESE WEAK LINK INTER-GRAIN CONTACTS BY PRODUCING A NOVEL MORPHOLOGY WHEREIN THE GRAIN BOUNDARY COMPOSITION IS MODIFIED BY THE PRESENCE OF NANOMETER FILMS OF SILVER.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government