Large critical current densities in YBa2Cu3O7−xthin films made at high deposition rates
作者:
X. D. Wu,
R. E. Muenchausen,
S. Foltyn,
R. C. Estler,
R. C. Dye,
A. R. Garcia,
N. S. Nogar,
P. England,
R. Ramesh,
D. M. Hwang,
T. S. Ravi,
C. C. Chang,
T. Venkatesan,
X. X. Xi,
Q. Li,
A. Inam,
期刊:
Applied Physics Letters
(AIP Available online 1990)
卷期:
Volume 57,
issue 5
页码: 523-525
ISSN:0003-6951
年代: 1990
DOI:10.1063/1.104245
出版商: AIP
数据来源: AIP
摘要:
Critical current densities (Jc) in YBa2Cu3O7−xfilms made at deposition rates from 0.1 to 14.5 nm/s (∼50 &mgr;m/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 withJcof ∼4×106A/cm2at 77 K and zero field.Jcfor 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 highTcsuperconductors using proper vapor deposition techniques.
点击下载:
PDF
(321KB)
返 回