This article reports on the development of second-generation Y1Ba2Cu3O7–(YBCO)-coated conductors deposited on biaxially textured MgO templates fabricated using ion-beam-assisted deposition (IBAD).The materials system architecture and processing techniques used to achieve high critical supercurrents on flexible superalloy substrates is described.The texturing of YBCO films on metal substrates approaches that of films deposited on single-crystal oxide substrates.Critical currents and critical current densities of YBCO films on metal substrates are also equivalent to YBCO films deposited on single-crystal oxides.
Paul N. Arendt is team leader for the Template Films Section of the Superconductivity Technology Center at Los Alamos National Laboratory. He has been at Los Alamos for 23 years and has been performing applied research on high-temperature superconducting films for the past 17 years. Prior to joining Los Alamos, he developed high-rate evaporation sources for an atomic vapor laser isotope separation program at Exxon Nuclear Corp.
He has a PhD degree in physics from the Ohio State University. He holds 11 U.S. patents and has authored more than 100 scientific publications in the fields of high-temperature superconductivity, rf cavities, optics, and isotope separation.
Arendt can be reached at Los Alamos National Laboratory, Superconductivity Technology Center, PO Box 1663, MS K-763, Los Alamos, NM 87545 USA; tel. 505-665-8358, fax 505-665-3164, and e-mail email@example.com.
Stephen R. Foltyn is the pulsed laser deposition team leader in Los Alamos National Laboratory's Superconductivity Technology Center. He has a MS degree in physics from the University of Missouri–Rolla and has been at Los Alamos for 26 years, during which time he has worked in the fields of lasers, laser-material interactions, thin films, and high-temperature superconductivity.
Foltyn can be reached at Los Alamos National Laboratory, Superconductivity Technology Center, PO Box 1663, MS K-763, Los Alamos, NM 87545 USA; tel. 505-667-0358, fax 505-665-3164, and e-mail firstname.lastname@example.org.