Robert H Sisk

US Patent:

55171702, May 14, 1996

Filed:

Sep 30, 1994

Appl. No.:

8/317071

Inventors:

Palmer N. Peters - Huntsville AL
Robert C. Sisk - Madison AL

Assignee:

The United States of America as represented by the Administator of the
National Aeronautics and Space Administration - Washington DC

International Classification:

H01L 4300

US Classification:

338 32H

Abstract:

A Hall effect device and a method of obtaining a magnetic field map of a magnetic body with the Hall effect device. The device comprises: (1) a substrate, (2) a first layer having a first Hall coefficient deposited over the substrate and (3) a second layer having a second Hall coefficient deposited over the first layer, the first and second layers cooperating to create, in the Hall effect device, a third Hall coefficient different from the first and second Hall coefficients. Creation of the third Hall coefficient by cooperation of the first and second layers allows use of materials for the first and second layers that were previously unavailable for Hall effect devices due to their relatively weak Hall coefficient.