LOW MAGNETIC FIELD SENSING DEVICE

Award Information
Agency: National Science Foundation
Branch: N/A
Contract: N/A
Agency Tracking Number: 27482
Amount: $64,480.00
Phase: Phase I
Program: SBIR
Awards Year: 1994
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
11409 Valley View Rd, Eden Prairie, MN, 55344
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 James M Daughton
 (612) 829-9217
Business Contact
Phone: () -
Research Institution
N/A
Abstract
A NOVEL MAGNETIC FIELD SENSING DEVICE WHICH USES THE MAGNETIC STRAY FIELD FROM A NEEL WALL IN A SOFT (LOW COERCIVITY) MAGNETIC THIN FILM TO BIAS A GIANT MAGNETORESISTANCE RATIO (GMR) SENSOR LAYER, THEREBY PROVIDING A HIGH RESISTANCE CHANGE IN THE SENSOR LAYER WITH A LOW APPLIED FIELD IS BEING INVESTIGATED. PRECISE LITHOGRAPHY (<0.5 MUM) IS REQUIRED TO ETCH THE SENSOR LAYER TO THE PROPER WIDTH AND TO LOCATE THE SENSOR PROPERLY WITH RESPECT TO A DOMAIN WALL IN THE SOFT LAYER. TECHNIQUES TO CONTROL THE POSITION OF THE DOMAIN WALL WILL BE EXPLORED. A DEMONSTRATION DEVICE WILL DEMONSTRATE THE FEASIBILITY OF THE CONCEPT AND SHOW AT LEAST A 5 PERCENT CHANGE IN RESISTANCE FOR AN APPLIED FIELD OF 2 OE OR LESS. THIS DEMONSTRATION WILL ALSO CLEARLY SHOW THAT 10 PERCENT OR HIGHER MAGNETORESISTANCE IS FEASIBLE WITH LESS THAN ONE OE OF APPLIED FIELD.

* 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
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government