RF Plasma Synthesis: A Novel Technique for Preparation of High Critical Field ``Dirty'' MgB$_{2}$

ORAL

Abstract

It has been shown, both theoretically as well as experimentally, that very high critical fields can be achieved in ``dirty'' MgB$_{2}$ superconductors. However, controlled homogeneous doping/alloying has thus far remained a challenge. A novel technique of rf plasma sputtering of ``dirty'' MgB$_{2}$ is hence being developed. This technique promises a potential for the synthesis of powders with homogeneous doping/alloying in the crystal lattice. Spatial temperature profile in the plasma plume is helpful, especially for the case of MgB$_{2}$ where the reacting species have very different vaporizing temperatures. Details of the design concept and preliminary results will be presented.

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Authors

  • Mohit Bhatia

    Accelerator Technology Corp., College Station, TX 77845

  • Edward Fry

    Institute for Astronomy, ETH, National Optical Astronomy Observatory, Department of Physics, ETH, Texas A&M University, LANL, American Physical Society, Society of Physics Students National Office, Texas Tech University, University of Texas, Universite d'Orleans, Steward Observatory, University of Arizona, Texas A\&M University-Commerce, Texas A\&M University, Institute for Quantum Electronics, ETH Zurich, Department of Engineering and Applied Science, Harvard University, Rice University, University of Houston, Bucknell University, Department of Physics, Texas A\&M University, Air Force Research Laboratory, Department of Physics, Texas A\&M University, College Station, TX 77843, Department of Physics and MIC, Texas A\&M University, University of Texas at Arlington, Changwon National University, University of North Texas, Southwestern University, The Pennsylvania State University, University of Dallas, UT Southwestern Medical Center, Naval Air Systems Command, Institute for Quantum Studies and Department of Physics, Texas A\&M University, College Station, TX 77843, The University of Texas at Arlington, TCU, ELTE, National Institute of Chemistry, Ljubljana, Slovenia, Texas Christian University, Fort Worth, TX, Dept. of Physics, Texas A\&M University-Commerce, Univ. of North Texas, Los Alamos National Laboratory, Oswego State University of New York, Lee College, University of Texas at San Antonio, UTSA-Professor, UNT, Sam Houston State University, Sewanee: The University of the South, Director of Education for NSF, Center for Nonlinear Dynamics and Department of Physics, The University of Texas at Austin, Sackler School of Chemistry, Tel-Aviv University, Rice University, Department of Physics and Astronomy, Houston, TX 77005, Center for Nonlinear Dynamics, University of Texas at Austin

  • Peter McIntyre

    Department of Physics, Texas A\&M University, College Station, TX 77843

  • Akhdiyor Sattarov

    Department of Physics, Texas A\&M University, College Station, TX 77843, Department of Physics, Texas A\&M University