Patent · US Expired

Magnetoresistor using a superlattice of GaAs and AlGaAs

US5189367A · kind A · utility

3Cited by

10References

7Claims

0Family size

Assignee

NEC Research Institute, Inc. · US

Inventors

Mark Lee · Berkeley Heights, US
Stuart A. Solin · Chesterfield, US
Peter Wolff · Donaustauf, DE

Key dates

Filing date	Nov 21, 1991
Grant date	Feb 23, 1993
Priority date	—
Expiry date	Nov 21, 2011

Classification

Technology area (CPC G)Physics
CPC primaryG01R33/093
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A superlattice comprising alternating layers of undoped GaAs and silicon doped Al.sub.0.3 Ga.sub.0.7 As is used as a magnetoresistor for measuring magnet fields in excess of one Tesla. The magnetic field to be measured is passed vertically through the superlattice and current from a source of constant current is flowed vertically through the resulting superlattice and the voltage drop across the superlattice is measured to provide an indication of the strength of the magnetic field.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.