The Development of a Two-Powder Process for Bi-2212 Precursor Powders

ORAL

Abstract

Bi$_{2}$Sr$_{2}$Ca$_{1}$Cu$_{2}$O$_{y}$ (Bi-2212) is a prime candidate for high-field ($>$20 T) superconducting magnet applications, as it can be formed into a round wire conductor, a unique characteristic among all the high-temperature supercondutors (HTS) discovered to date. Round wires are manufactured by conventional oxide powder-in-tube processes (OPIT). A critical part of this process is the quality of the starting oxide powder precursor, affecting the drawing processes to form wire, the development of the superconducting phase in-situ during heat treatments and the connectivity along the wire length. To better manipulate the partial-melt behavior while better controlling the formation of 2212 by reducing the number of phases present, as 2-powder process was developed. A set of anneals has been completed on the resulting precursor powder. Initial characterization indicates the process can produce Bi-2212, though further development is necessary.

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Authors

  • Andrey Chabanov

    West Texas A\&M University, Rhodes College, Texas Woman's University, University of Texas at San Antonio, Texas A\&M University, Department of Physics, University of Texas at Arlington, Texas State University, Pajarito Scientific Corporation, Idaho National Laboratory, Duke University, UNC, Department of Chemistry, UTSA, Department of Physics and Astronomy, UTSA, The University of Texas at San Antonio, Harvar-Smithsonian Center for Astrophysics, University of New Mexico, Maria Mitchel Observatory, NRAO, University of Alabama, Trinity University, Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, Texas 78249, V. Alecsandri College, Bacau, Romania, University of Texas at Dallas, Argonne National Laboratory, Western Michigan University, Institute of Physics, UNAM, Mexico, University of North Texas - Chemistry, University of St. Thomas, SwRI San Antonio, Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Department of Electrical and Computer Engineering, University of Texas at Arlington, Department of Physics, University of Texas at Brownsville, SciPrint.org, The University of Texas at Austin, Georgia Tech, MIT, University of Tennessee, University of Michigan, ORNL, Texas A&M University-Commerce, University of Texas San Antonio, University of Texas at Brownsville, University of Dallas, Sternberg Astronomical Institute, SwRI, CU-Boulder, SwRI/UTSA, Southwest Research Institute, JILA, University of Colorado, Department of Physics, Texas A\&M University, Stephen F. Austin State University, Angelo State University, St. Mary's University, Physics Department, University of South Florida, CINVESTAV, Queretaro, Mexico, Department of Physics, UCSD, LANSCE, Los Alamos National Laboratory, Department of Physics and Astronomy, Texas A\&M University, Texas A\&M University: Department of Physics, Texas Christian University, Fort Worth, TX, Paschal High School, Fort Worth, TX, Tarleton State University, Stephenville, TX, Paine College, Augusta, GA, University of Houston, University of Texas at Arlington, IREAP, Department of Physics, University of Maryland, Air Force Research Laboratory, Institute for Quantum Studies and Department of Physics, Texas A\&M Universtity, College Station, Texas 77843, USA, Max-Planck Institut for Kernphysik, Saupfercheckweg 1,D-69117 Heidelberg, Germany, The National Center for Mathematics and Physics, P.O. Box 6086, KACST, Riyadh 11442, Saudi Arabia

  • Terry Holesinger

    Los Alamos National Laboratory