Anisotropic shift of the irreversibility line by neutron irradiation
F M Sauerzopf; H P Wiesinger; H W Weber; G W Crabtree; M C Frischherz; M A Kirk; F M Sauerzopf; Atominst. der Osterreichischen Univ., Wien, Austria; H P Wiesinger; Atominst. der Osterreichischen Univ., Wien, Austria; H W Weber; Atominst. der Osterreichischen Univ., Wien, Austria; G W Crabtree; Atominst. der Osterreichischen Univ., Wien, Austria; M C Frischherz; Atominst. der Osterreichischen Univ., Wien, Austria; M A Kirk; Atominst. der Osterreichischen Univ., Wien, Austria
Журнал:
Superconductor Science and Technology
Дата:
1992-01-01
Аннотация:
The irreversibility line of high-T<sub>c</sub> superconductors is shifted considerably by irradiating the material with fast neutrons. The anisotropic and non-monotonous shift is qualitatively explained by a simple model based on an interaction between three pinning mechanisms, the intrinsic pinning by the ab-planes, the weak pinning by the pre-irradiation defect structure, and strong pinning by neutron induced defect cascades. A correlation between the cascade density and the position of the irreversibility line is observed.
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