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Large magnetoresistance in non-magnetic silver chalcogenides and new class of magnetoresistive compounds

United States Patent

November 13, 2001
View the Complete Patent at the US Patent & Trademark Office
Argonne National Laboratory - Visit the Technology Development and Commercialization Website
The heavily-doped silver chalcogenides, Se and Te, show magnetoresistance effects on a scale comparable to the "colossal" magnetoresistance (CMR) compounds. Hall coefficient, magnetoconductivity, and hydrostatic pressure experiments establish that elements of narrow-gap semiconductor physics apply, but both the size of the effects at room temperature and the linear field dependence down to fields of a few Oersteds are surprising new features.
Saboungi; Marie-Louis (Chicago, IL), Price; David C. L. (Chicago, IL), Rosenbaum; Thomas F. (Chicago, IL), Xu; Rong (Den Haag, NL), Husmann; Anke (Kiel, DE)
The United States of America as represented by the United States Department of Energy (Washington, DC)
09/ 153,087
September 10, 1998
CONTRACTUAL ORIGIN OF THE INVENTION The United States Government has rights in this invention pursuant to Contract No. W-31-109-ENG-38 between the U.S. Department of Energy and The University of Chicago representing Argonne National Laboratory.