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Defect size dependence of critical current density enhancement for irradiated YBa2Cu3O7−δ

✍ Scribed by J. Bechtold; Y.Y. Xue; Z.J. Huang; E.V. Hungerford; P.H. Hor; C.W. Chu; X.K. Maruyama; H. Backe; F.R. Buskirk; S.M. Connors; D.D. Snyder; Y.C. Jean; J.W. Farmer

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
546 KB
Volume
191
Category
Article
ISSN
0921-4534

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✦ Synopsis

The effects of 100 MeV electron (to 3.6 X 10 ~ a cm-2 ) and fast neutron irradiation (to 4.0 x I 0 ~ a cm-2 ) on the superconducting properties of melt-textured YBa2Cu3OT_ ~ is studied experimentally. By comparing the critical current enhancement effects normalized to the total atomic displacement damage, it is found that the enhancement depends heavily on the type and energy of radiation and on the beam direction with respect to the crystal. Fast neutron irradiation is more effective than 100 McV electron irradiation (along the c-axis) in enhancing the critical current, and electron irradiation along the c-axis is more effective than electron irradiation along the a, b-plane. A model based on defect size is proposed to interpret the effects.

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