University of California

The United States of America As Represented by the United States

William Larry Hults

Quanxi Jia

Stephen R Foltyn

James L Smith

Dean E Peterson

Chuhee Kwon

Kenneth V Salazar

Kimberly A Kubat-Martin

David S Phillips

Eric J Peterson

A superconductive structure including a dielectric oxide substrate and a thin layer of a rare earth-barium-copper oxide superconducting film thereon, the thin layer including at least two rare earth elements is provided.

Superconducting structure including mixed rare earth barium-copper compositions

A process and a precursor composition for preparing a lead-doped bismuth-strontium-calcium-copper oxide superconductor of the formula Bi.sub.a Pb.sub.b Sr.sub.c Ca.sub.d Cu.sub.e O.sub.f wherein a is from about 1.7 to about 1.9, b is from about 0.3 to about 0.45, c is from about 1.6 to about 2.2, d is from about 1.6 to about 2.2, e is from about 2.97 to about 3.2 and f is 10.+-.z by reacting a mixture of Bi.sub.4 Sr.sub.3 Ca.sub.3 Cu.sub.4 O.sub.16.+-.z, an alkaline earth metal cuprate, e.g., Sr.sub.9 Ca.sub.5 Cu.sub.24 O.sub.41, and an alkaline earth metal plumbate, e.g., Ca.sub.2-x Sr.sub.x PbO.sub.4 wherein x is about 0.5, is disclosed.

Synthesis of BiPbSrCaCuO superconductor

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Los Alamos, NM, United States of America

William Larry Hults