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Critical currents after thermal neutron irradiation of uranium doped superconductors

Published online by Cambridge University Press:  31 January 2011

F. E. Luborsky ,
R. H. Arendt ,
R. L. Fleischer ,
H. R. Hart Jr. ,
K. W. Lay ,
J. E. Tkaczyk  and
D. Orsini
F. E. Luborsky
Affiliation:
General Electric Research and Development Center, Schenectady, New York 12301
R. H. Arendt
Affiliation:
General Electric Research and Development Center, Schenectady, New York 12301
R. L. Fleischer
Affiliation:
General Electric Research and Development Center, Schenectady, New York 12301
H. R. Hart Jr.
Affiliation:
General Electric Research and Development Center, Schenectady, New York 12301
K. W. Lay
Affiliation:
General Electric Research and Development Center, Schenectady, New York 12301
J. E. Tkaczyk
Affiliation:
General Electric Research and Development Center, Schenectady, New York 12301
D. Orsini
Affiliation:
General Electric Research and Development Center, Schenectady, New York 12301
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Abstract

Fission fragment damage was introduced into aligned sintered samples of various superconductors containing small additions of UO2 by irradiation with thermal neutrons. Samples of aligned, sintered YBa2Cu3Ox, powdered Bi2Sr2Ca1Cu2Oy, powdered Bi1.7Pb0.3Sr2Ca2Cu3Oz, and epitaxial films of YBa2Cu3Ox on (100)SrTiO3 were used. Magnetic hysteresis, with the critical state model, was used to evaluate changes in the intragranular critical current. In the case of the Bi1.7Pb0.3Sr2Ca2Cu3Oz powders an increase in intragranular Jc at 0.8 T of greater than 70 times was produced by the radiation. The epitaxial film showed no change in Jc on irradiation. This behavior upon irradiation is attributed to the pinning caused by damage produced by the fission products of uranium.

Type
Articles
Information
Journal of Materials Research , Volume 6 , Issue 1 , January 1991 , pp. 28 - 35
Copyright
Copyright © Materials Research Society 1991

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