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Large critical current densities in YBa2Cu3O 7-x thin films made at high deposition rates

Publication Type

Journal Article

Authors

Wu, X.D, R.E Muenchausen, S Foltyn, R.C Estler, R.C Dye, A.R Garcia, N.S Nogar, P England, Ramamoorthy Ramesh, D.M Hwang, T.S Ravi, C.C Chang, T Venkatesan, X.X Xi, Q Li, A Inam

DOI

10.1063/1.104245

Abstract

Critical current densities (Jc) in YBa2Cu 3O7-x films made at deposition rates from 0.1 to 14.5 nm/s (∼50 μm/h) were measured using a direct transport method. As the deposition rate was increased by two orders of magnitude, the films exhibited no marked degradation in current carrying capability with Jc of ∼4×106 A/cm2 at 77 K and zero field. J c for all the films showed similar behavior under a magnetic field up to 8 T, although extra structural defects were found in the films deposited at the higher rates. The results from this experiment indicate the feasibility for coating wires, tapes, and other macroscopic shapes with high Tc superconductors using proper vapor deposition techniques.

Journal

Applied Physics Letters

Volume

Year of Publication

1990

ISSN

00036951

Notes

cited By 57

Research Areas

Ramesh Lab