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  1. No Access

    Article

    Texture and transport in spray pyrolyzed TlBa2Ca2Cu3O9 thick films

    The electron backscattering pattern technique has been applied to the microstructural investigation of Tl(1223) thick films formed by vapor-phase thallination of Ag-containing Ba–Ca–Cu–oxide precursors. For sa...

    J. E. Tkaczyk, J. A. Sutliff, J. A. DeLuca… in Journal of Materials Research (1995)

  2. No Access

    Article

    The microstructural evolution of a silver-containing spray deposited 1223 Tl–Ca–Ba–Cu oxide superconductor

    This paper reports a study of the microstructural evolution of Ag-containing 1223 Tl-Ca-Ba-Cu oxide superconductors in spray-deposited films. The films were formed by spray depositing nitrates of Ca, Ba, Cu, a...

    C. L. Briant, J. A. DeLuca, P. L. Karas, M. F. Garbauskas… in Journal of Materials Research (1995)

  3. No Access

    Article

    Dependence of critical current density on microstructure and processing of high-Tc superconductors

    Microstructural origins for reduced weak-link behavior in high-Jc melt-processed YBCO, spray pyrolyzed thick films of Tl-1223, metallic precursor Y-124 polycrystalline powder-in-tube (PIT) wires and PIT Bi-2212/2...

    A. Goyal, E. D. Specht, Z. L. Wang, D. M. Kroeger… in Journal of Electronic Materials (1994)

  4. No Access

    Chapter and Conference Paper

    Field Dependence of the Transport Critical Current in Polycrystalline TlBa2Ca2Cu3Oz Films

    Large critical currents with a relatively weak magnetic field dependence are obtained in thick films of TlBa2Ca2Cu3Oz. Transport measurements indicate Jc > 105 A/cm2 at 77K, zero field, and Jc>104 at 60K in a 2T ...

    J. E. Tkaczyk, J. A. DeLuca, P. L. Karas… in Advances in Superconductivity V (1993)

  5. No Access

    Article

    The Synthesis of "1223" TL-CA-BA-CU-Oxide Superconducting Films Via the Reaction of Silver-Containing Spray Deposited Oxide Precursors with Thallium Oxide Vapor in a Two-Zone Reactor

    Superconducting films of "1223" Tlx Ca2Ba2Cu3Oy (0.65<×<l.00) have been prepared on polycrystalline yttria stabilized zirconia substrates via the reaction of thallium oxide vapor with spray-deposited Ca-Ba-Cu-oxi...

    J. A. DeLuca, P. L. Karas, J. E. Tkaczyk, C. L. Briant… in MRS Online Proceedings Library (1992)

  6. No Access

    Article

    Critical current and microstructure of uniaxially aligned, polycrystalline YBa2Cu3O7−δ

    Three processing routes that generate uniaxial alignment but otherwise yield very different microstructure and critical current are compared. Fine grain size and c-axis alignment are obtained in magnetically a...

    J. E. Tkaczyk, C. L. Briant, J. A. DeLuca, E. L. Hall… in Journal of Materials Research (1992)