American Superconductor Corporation

Brookhaven Science Associates, Lcc

Srivatsan Sathyamurthy

Martin W Rupich

Vyacheslav Solovyov

Qiang Li

A method for producing a long length high temperature superconductor wire, includes providing a substrate, having a surface with a length of at least 50 meters and a width. The surface supports a biaxially textured high temperature superconducting layer and the biaxially textured high temperature superconducting layer has a length and a width corresponding to the length and width of the surface of the substrate. The method includes irradiating the biaxially textured high temperature superconductor layer with an ion beam impinging uniformly along the length and across the width of the biaxially textured high temperature superconductor layer to produce a uniform distribution of pinning microstructures in the biaxially textured high temperature superconductor layer.

Long length high temperature superconducting wires with uniform ion implanted pinning microstructures

An article including a substrate and a layer of a homogeneous metal-oxyfluoride intermediate film disposed on the substrate, the intermediate film containing a rare earth metal, an alkaline earth metal, and a transition metal. The intermediate film has a defect density less than 20 percent and, upon thermal treatment, is capable of converting to a homogeneous rare earth metal-alkaline earth metal-transition metal-oxide superconductor film with a stoichiometric thickness greater than 1 &#x3bc;m and up to 5 &#x3bc;m. Also disclosed is another article including a substrate and the homogeneous superconductor film with a stoichiometric thickness greater than 1 &#x3bc;m and up to 5 &#x3bc;m. Further, methods of making these two articles are described.

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Westford, MA, United States of America

Srivatsan Sathyamurthy