Fast neutron irradiation and flux pinning in single crystalline high temperature superconductors

We report on the influence of fast neutron irradiation on the critical currents in single crystalline YBa 2Cu 3O 7− δ and Bi 2Sr 2CaCu 2O 8+γ. From magnetization measurements and especially from an analysis of the irreversibility lines, models for the defect structure, effective for flux pinning in...

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Bibliographic Details
Published in:Cryogenics (Guildford) 1993, Vol.33 (1), p.8-13
Main Authors: Sauerzopf, F.M, Wiesinger, H.P, Kritscha, W, Weber, H.W, Frischherz, M.C, Gerstenberg, H
Format: Article
Language:English
Subjects:
BiSCCO
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Physics
Properties of type I and type II superconductors
Superconductivity
YBCO
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Summary:We report on the influence of fast neutron irradiation on the critical currents in single crystalline YBa 2Cu 3O 7− δ and Bi 2Sr 2CaCu 2O 8+γ. From magnetization measurements and especially from an analysis of the irreversibility lines, models for the defect structure, effective for flux pinning in these systems, are derived. A comparison of fast neutron irradiation of YBa 2Cu 3O 7−δ at 5 K (and subsequent measurement without warming the sample above 95 K) and at ambient reactor temperature allows us to distinguish qualitatively between the contributions of defects of different size to flux pinning in these systems.
ISSN:0011-2275
1879-2235
DOI:10.1016/0011-2275(93)90068-Y