David P. Norton,
Amit Goyal,
John D. Budai,
David K. Christen,
Donald M. Kroeger,
Eliot D. Specht,
Qing He,
Bernd Saffian,
M. Paranthaman,
Charles E. Klabunde,
Dominic F. Lee,
Brian C. Sales,
Fred A. List
In-plane-aligned, c axis-oriented
YBa2Cu3O7 (YBCO) films with
superconducting critical current densities Jc as
high as 700,000 amperes per square centimeter at 77 kelvin have been
grown on thermomechanically rolled-textured nickel (001) tapes by
pulsed-laser deposition. Epitaxial growth of oxide buffer layers
directly on biaxially textured nickel, formed by recrystallization of
cold-rolled pure nickel, made possible the growth of YBCO films 1.5 micrometers thick with superconducting properties that are comparable
to those observed for epitaxial films on single-crystal oxide
substrates. This result represents a viable approach for the production
of long superconducting tapes for high-current, high-field applications
at 77 kelvin.
D. P. Norton, J. D. Budai, D. K. Christen, Q. He, B. Saffian, C. E. Klabunde, B. C. Sales, Solid State Division, Oak Ridge National
Laboratory (ORNL), Post Office Box 2008, Oak Ridge, TN 37831-6056,
USA.
A. Goyal, D. M. Kroeger, E. D. Specht, D. F. Lee, F. A. List, Metals
and Ceramics Division, ORNL, Post Office Box 2008, Oak Ridge, TN
37831-6116, USA.
M. Paranthaman, Chemical and Analytical Sciences Division, ORNL, Post
Office Box 2008, Oak Ridge, TN 37831-6100, USA.
